117results about How to "Increase the number of tests" patented technology

The embodiment of the invention discloses a channel detection method of an unauthorized frequency band and network cell equipment, which are used for reducing the detection collision and achieving coexistence in justice among LAA cells of different operators. The method provided by the embodiment of the invention comprises the following steps that the network cell equipment detects that whether the channel of the unauthorized frequency band is idle or not in the CCA detection time frame during target channel idle estimation, wherein the target CCA detection time frame is contained in a CCA detection time window which at least comprises N CCA detection time frames, and at least two different operators use the different CCA detection time frame in the N CCA detection time frames; when the detected channel is idle, the network cell equipment performs data transmission based on the idle channel.

The invention belongs to the technical field of semiconductor memory test and discloses a semiconductor memory aging test system and a method. The system comprises a test core board and a test board.The test core board generates a t signal and a power signal according to that instruction of the upper computer, and after the test signal and the power signal are adjusted, the test signal is provided to a DUT, and the DUT output signal is compared with a preset value to obtain a preliminary test result which is partitioned and stored, and is uploaded to the upper computer; the test board is usedfor carrying DUT, providing clock signal and chip selection signal for DUT. A single test board is provided with a plurality of t bits, and DUT aging test can be carried out by a single DUT or by multiple DUTs at the same time. By outputting various types of test signals on the test core board, and adjusting the delay time of the test signal, strengthening the processing of driving, waveform control, and compensating the power signal, and storing the test results in the partitioned storage area respectively, the functions of management of single DUT test process control and failure analysis in aging test are realized, and the same test number of DUT is increased, which reduces the test resource overhead.

The invention provides a targeted metabo lomics analysis method for determining metabolites of a living body. The targeted metabo lomics analysis method can simultaneously determine 700 main metabolites of a living body based on series connection of ultra-high performance liquid chromatography and triple quadrupole and comprises the following steps: firstly, 700 main metabolites in a living body are screened; standard products of compounds are optimized to obtain optimal parent ions, daughter ions and mass spectrography conditions of the metabolites; the metabolites in samples are extracted by methanol, acetonitrile and water; liquid chromatograph conditions are optimized; a hydrophilic interaction is adopted to separate the metabolites; the separated metabolites enters a mass spectrum; the 700 main metabolites are determined at the same time by use of a real-time scheduled multi-reaction monitoring mode with quick positive and negative polarity switching function; the metabolite differences between all the samples are analyzed via partial least square analysis; changes of the metabolic pathway are found by pathway enrichment analysis. The targeted metabo lomics analysis method remarkably increases the number of detected compounds, and greatly shortens the analysis time.

The embodiment of the invention discloses a method for detecting common-frequency cells of an LTE system. The method comprises the steps that received first time domain data are segmented and transformed into a frequency domain, first correlation operation is carried out on each segment of data transformed to the frequency domain and a local reference primary synchronizing signal (PSS), a result of the first correlation operation is transformed back to a time domain, and second time domain data are obtained; power of all sampling points in the second time domain data is calculated, power delay profiles (PDP) of the sampling points are obtained, and peak mean ration (PMR) values of all the sampling points are calculated according to the power delay profiles (PDP); the primary synchronizing signal (PSS) and the synchronous position of the primary synchronizing signal (PSS) in a half frame are determined according to the point with the largest the peak mean ration (PMR) value; a secondary synchronizing signal (SSS) is determined according to the primary synchronizing signal (PSS) and the synchronous position of the primary synchronizing signal (PSS) in the half frame, and therefore the common-frequency cells are determined. The embodiment of the invention further discloses a device for detecting the common-frequency cells of the LTE system. The LTE common-frequency cells can be effectively detected, and the requirement for measuring the common-frequency cells, covered with a wireless network, of the existing LTE system can be met.

The invention discloses a rapid detection system for novel coronavirus Omicron mutant strain typing. Primer probes in the system are designed based on a bidirectional ARMS PCR technology, six mutation sites of a targeted Omicron mutant strain are detected, the detection accuracy of the Omicron mutant strain is improved to nearly 100%, and the lowest detection limit can be as low as 200 copies / mL. The kit has good sensitivity and specificity; and the whole process can be completed within 30 minutes, operation is easy, rapid and sensitive, the requirement for hardware is low, cost is low, and the kit can be prepared through the technology and used for wide popularization. The detection system is made into a freeze-dried state, so that the detection sensitivity is further improved. An effective technical means is provided for rapid detection and screening of the novel coronavirus Omicron mutant strain, and important significance is achieved.

The invention relates to a high-altitude haze detecting device. According to the high-altitude haze detecting device, by combining a high altitude balloon with a pod, high-altitude haze detection is carried out; by using an electromagnetic pressure reducing exhaust valve I and a helium tank in the pod, the high altitude balloon is lifted; by using an antenna at the rear part of the pod and an electric steering engine and a propeller which are at the bottom of the pod, the device can be remotely controlled to control the advancing directions of the high altitude balloon in different wind layers, and the power of the high altitude balloon is provided by a storage battery pack in the pod; by using a measuring and compensating device in the pod, a high-altitude haze sample is collected to be detected; on the basis of a beta-ray and dynamic heating system method, a refrigerator and a weighing device are additionally arranged to carry out secondary weighing on condensed volatile substances so as to further improve the measuring accuracy; in order to increase the detection frequency, a paster storage device is used to store a paster and automatically change the paster; and as the pod cannot keep horizontal to affect a weighing result under an effect of wind power in the air; and by using a balancing device, the measuring and compensating device is kept in balance.

The invention relates to a rapid detection method for the highway roadbed compaction quality. The method comprises the following steps that firstly, in construction fields of roadbeds different in soil texture, a to-be-detected roadbed soil area is selected, a test point is selected at random, the dynamic deformation modulus Evd value of the point is tested, and data are recorded; secondly, another test point is selected, the roadbed compaction degree is detected through a sand filling method, and data are recorded; thirdly, the first step and the second step are repeatedly conducted, and therelation of the dynamic deformation modulus Evd value and the roadbed compaction degree K of each soil texture is established; fourthly, field testing is conducted; fifthly, data collection is clickedfrom a data collection software main interface, a testing instrument starts to conduct testing and transmission, and a background part conducts calculation and conversion according to the Evd and K correlation of the soil texture corresponding to the roadbed, and the compaction degree K is obtained; and sixthly, a detection result is uploaded to a roadbed compaction quality background managementsystem through the network, and the data are checked. The rapid detection method is rapid and convenient to conduct, data are accurate and reliable, the rapid detection method is applicable to the construction site, and the quality information can be reflected in real time.

The invention discloses real-time fluorescent quantitative PCR (polymerase chain reaction) detection method and kit for resistance of plutella xylostella to Bt insecticidal protein. The real-time fluorescent quantitative PCR detection kit for detecting the resistance of plutella xylostella to bacillus thuringiensis Bt insecticidal proteins is characterized by containing the following primer sequences: a forward primer: 5'-GCACACACCATGACCGTAGCAG-3', and a reverse primer: 5'-GGCTCTTCGTGACATCG-3'. The real-time fluorescent quantitative PCR detection method for the resistance of plutella xylostella to Bt insecticidal proteins disclosed by the invention has the characteristics of small manual labor and sample amount, large detection amount, high flexibility, strong specificity, rapidness and convenience and accuracy and reliability, thereby being capable of effectively detecting the resistance of plutella xylostella to Bt insecticidal proteins and suitable for early rapid diagnosis of resistance of plutella xylostella to Bt insecticidal protein; and at the same time, the real-time fluorescent quantitative PCR detection method and kit can be used for real-time monitoring and early warning and forecasting of resistance of plutella xylostella to Bt insecticidal protein, so that the application prospect is wide.

A novel test development method for improving a simultaneous test number comprises the following steps that firstly, test requirements are received; secondly, the test requirements are assessed and then pins of a chip can be conveniently grouped and classified according to the test requirements; thirdly, whether the grouped and classified pins can share a test passage is assessed, the second step is repeated when the grouped and classified pins can not share the test passage, and the fourth step is executed when the grouped and classified pins can share the test passage; fourthly, the simultaneous test number is confirmed; fifthly, a probe card is designed and manufactured; sixthly, a test program is developed; seventhly, the test program is debugged; eighthly, a wafer is tested. Under the condition that the resources of a test machine are not changed, by means of the test developed method, the simultaneous test number can be largely improved on the premise of guaranteeing the test quality, the total test time is shortened, and test efficiency is improved.

The invention provides a full-automatic nucleic acid detection system. The full-automatic nucleic acid detection system comprises a sample pretreatment unit, at least one nucleic acid extraction unit,at least one system preparation unit, at least one nucleic acid detection unit, a consumable preparation unit, a sample post-treatment unit and a plurality of transfer units; the sample pretreatmentunit is used for transferring a to-be-detected sample to a nucleic acid extraction well plate; the nucleic acid extraction unit is used for extracting nucleic acid in the to-be-detected sample on thenucleic acid extraction well plate; the system preparation unit is used for mixing a nucleic acid amplification reagent with a nucleic acid from the nucleic acid extraction unit; the nucleic acid detection unit is used for carrying out a nucleic acid amplification and a detection on the nucleic acid from the system preparation unit; the consumable preparation unit is used for providing consumablesfor the sample pretreatment unit, the nucleic acid extraction unit and the system preparation unit; the sample post-treatment unit is used for receiving medical waste generated by the nucleic acid extraction unit and the nucleic acid detection unit; and a plurality of the transfer units are used for isolating or smoothly communicating the transfer units with other units and transferring materials. Due to the fact that all links of a nucleic acid detection are covered, harm to personnel is avoided and an efficiency is improved.

The invention relates to a memory IC testing and classifying device, comprising a feeding box which is arranged on a machine platform to support the memory IC to be tested; a receiving box which is arranged on the machine platform to support the tested memory IC; a testing device which is arranged on the machine platform, and provided with a plurality of testing sheath seats in parallel; a material moving device which is arranged on the machine platform, and provided with a jack jig and a plurality of taking and placing heads to transfer a plurality of memory ICs tested or to be tested among the feeding box, the testing device and the receiving box; a central processor which is used to control and integrate the movement of each device to execute automatic operation. Thereby, a plurality of memory ICs can be transferred and tested synchronously, the stand-by time is effectively shortened, the testing efficiency of the memory IC is largely improved, and the service efficiency and the use benefits of the efficiency are achieved and improved.

The invention provides a thermal ageing testing apparatus and a using method thereof. The thermal ageing testing apparatus comprises a testing box and a feeding device. A testing box is provided with a liquid crystal display and a camera; a heating device and a fan are arranged at the lower end of the two sides of the testing box; a plurality of groups of power clamp grooves are formed inside the testing box and air inlets are arranged at the inner wall of the testing box at the two sides of multiple groups of power clamp grooves; and an air outlet is formed in the top end of the testing box. The feeding device includes a feeding vehicle and a testing board; a fixed rack is installed on the feeding vehicle and a plurality of fixation positions are arranged on the fixed rack; power connectors are arranged at the rear end of the fixed rack; power ports are arranged at the fixation positions; and the power ports arranged at the rear end of the fixed rack are connected with the power connectors arranged on the fixation positions. The testing board is installed on fixation positions and is connected with the power connectors. A plurality of plugging slots are formed in the testing board. According to the invention, the design is reasonable and the operation is simple; the testing process can be realized rapidly; and the testing number is large and the transport speed is fast. Intelligent heating and cooling are carried out; and the time is saved. Real-time observation is carried out while element testing is carried out.

The invention discloses a specific PCR (Polymerase Chain Reaction) primer pair for detecting the resistance of (i)Bemisia( / i)(i)tabaci( / i) on thiamethoxam, a kit and a detection method. The forward primer nucleotide sequence of the specific PCR primer pair is as shown in SEQ ID No.1, and the reverse primer nucleotide sequence of the specific PCR primer pair is as shown in SEQ ID No.2. The fluorescent quantitative PCR detection method of the bemisia tabaci on the thiamethoxam, which is disclosed by the invention, has the characteristics of less labour power, small sample quantity, large detection quantity, high sensitivity, high specificity, fastness, simpleness, convenience, accuracy and reliability, thereby effectively detecting the resistance of the bemisia tabaci on the thiamethoxam; the fluorescent quantitative PCR detection method disclosed by the invention is suitable for the early fast diagnosis of the resistance of the bemisia tabaci on the thiamethoxam, can be used for the real-time monitoring, prewarning and prediction of the resistance of the field bemisia tabaci on the thiamethoxam and is wide in application prospect.

The invention discloses a real-time fluorescent quantitative PCR method for detecting the resistance of a diamondback moth to Bt insecticidal protein Cry1Ac based on an ABCC1 gene and a kit thereof. The kit comprises the sequences of the following target gene specific primers: the sequence of a forward primer is shown in SEQIDNO. 2 and the sequence of a reverse primer is shown in SEQIDNO. 3. Since the method disclosed by the invention has the advantages of less manpower and samples, large detection amount, high sensitivity and strong specificity and is fast, convenient, accurate and reliable, the level of the resistance of the diamondback moth to the Bt insecticidal protein Cry1Ac can be effectively detected, the method is applicable to the early rapid diagnosis of the resistance of the diamondback moth to the Bt insecticidal protein Cry1Ac and can be also used for real-time monitoring and early warning / forecasting of the resistance of the diamondback moth in the field to the Bt insecticidal protein Cry1Ac and thus the method has broad application prospects.

The invention discloses a multiplex PCR primer group and a kit for detecting HPV based on high-throughput sequencing. Existing methods are difficult to realize HPV high-throughput sample detection. When a large amount of samples need to be detected, a large amount of manpower is needed for operation. According to a method established by the invention, amplification and purification can be performed through a one-step method, a library is established through the one-step method, tube transform and cover opening are avoided in the midway, and confusion or cross contamination among samples is effectively avoided; library construction of 96 samples can be completed within 5 hours, operation is easy and convenient, and detection of a large number of samples can be easily achieved. By increasingthe number of sample tags in an index primer, the number of samples which can be detected through one-time sequencing can be increased, and the average manual operation time of a single sample is further shortened.

The embodiment of the invention provides a charging method and a terminal. By the charging method and the terminal, the problem of charging time delay of the terminal is solved. The method comprises the steps of acquiring a detection result of a type of a charging interface of a charging device, wherein the detection result is a result of a type of the charging interface detected for N times by employing a first detection signal, and the charging device is connected with the terminal; detecting the type of the charging interface by employing a second detection signal if the detection result isa first result, wherein the first result is used for indicating that the type of the charging interface detected for N times is a non-special charging interface DCP, the first detection signal is a detection signal generated by a power module of the terminal, and the second detection signal is a detection signal generated by a control module of the terminal; employing the first detection signal to detect the type of the charging interface again if the type of the charging interface detected by employing the second detection signal is the DCP; and employing a first power corresponding to the DCP to charge the terminal if the type of the charging interface detected by employing the first detection signal again is the DCP.

The invention provides a power grid line-tracking magnetic guidance method based on orthogonal three-position magnetic detection to solve the prominent problems that existing power grid line-tracking guidance efficiency and accuracy are low, and practical requirements cannot be met. The method includes the steps: firstly, building an orthogonal three-position magnetic detection structure, detecting the magnetic field intensity of each position and acquiring the magnetic line direction and the gradient of a magnetic field according to the magnetic field intensity of each position; building the motion equation of a detection aircraft relative to an inertial coordinate system, and building the power grid line-tracking magnetic guidance method of the aircraft according to the detected magnetic line direction and the detected magnetic field gradient. The method can be used for high-precision terminal guidance of power grid fault detection, and has huge application values for rapid repair of a faulted power grid.

The invention discloses a DRAM (dynamic random access memory) wafer-level pin connectivity test circuit and a method. The circuit structure comprises a calibration register, a delay unit, an OCD circuit, a receiving circuit, a data path and a storage array which are connected in sequence, input signals of a DQ pin and a DQS pin of a DRAM wafer level are transmitted into a chip through the receiving circuit, and output signals of the DQ pin and the DQS pin are driven through the OCD circuit. DM pin input signals of the DRAM wafer level are transmitted into the chip through the receiving circuit, and output signals of the DRAM wafer level control the level through the DM forced circuit. According to the invention, under the condition of not adding extra pin connection, the functions of all DQ data paths and DQS and DM pins are completely verified, the test comprehensiveness is improved, and the design difficulty and cost of the test pin card are not increased; for subsequent back-end testing, the bad chips are screened out in advance, the packaging cost is reduced, and the back-end testing yield is improved. And for KGD type products, the DPM is reduced, and the product quality is ensured.

The invention relates to a kit for screening IgA deficient patients, which consists of a reagent and a box body, wherein the reagent consists of a sample diluent, an antibody diluent, a plate-washingliquid, a confining liquid, a stop solution, a coating antibody, an enzyme-labeled secondary body, a human IgA antigen standard substance and a TMB. The kit for detecting IgA can be applied to blood routine tests by clinical treatment institutions and blood stations, reduces blood transfusion risks for the IgA deficient patients, and improves the safety of blood transfusion.

The invention discloses a multi-chip simultaneous measurement structure. According to the multi-chip simultaneous measurement structure, an electrical test is performed on chips on a wafer; the chipsto be tested on the wafer are divided into rows and columns so as to form a test array, and the chips to be tested in the same column are connected in parallel so as to form the test port of each column; the test ports are connected with the power source channels of a tester; the chips to be tested on the same row share one control switch; and the tester is provided with a plurality of power source channels, and one power source channel of the tester is corresponding to the test port of the chips to be tested in one column. The invention also discloses a simultaneous measurement method of themulti-chip simultaneous measurement structure. According to the simultaneous measurement method of the multi-chip simultaneous measurement structure, the chips to be tested are reasonably matched withthe channels of the tester, and therefore, the number of chips that can be tested simultaneously can be increased, and the power consumption parameter test of each chip to be tested is realized; anda test unit that encounters a short circuit during test can be isolated by the corresponding control switch, and therefore, misjudgment can be reduced.

The embodiment of the invention discloses a method and device for adjusting the diagnosis frequency of the oxynitride conversion efficiency. The method comprises the steps that whether a vehicle runsunder a preset working condition or not is detected; when the vehicle runs under the preset working condition, the conversion efficiency of oxynitride NOx is calculated; the correction frequency of NOx conversion efficiency diagnosis is obtained according to the corresponding relation between the NOx conversion efficiency and the correction frequency of NOx conversion efficiency diagnosis; and thefixed NOx conversion efficiency diagnosis frequency of the vehicle is automatically adjusted according to the correction frequency. According to the method, the NOx conversion efficiency diagnosis frequency is changed from a fixed value to a value changing along with the conversion efficiency; the diagnosis frequency can be automatically adjusted according to the NOx conversion efficiency in theSCR; therefore, the SCR fault detection frequency can be increased under the condition of high SCR actual efficiency, and the fault reporting frequency can be reduced under the condition of low SCR actual efficiency, so that the possibility of false alarm is reduced, and the reporting of real faults can also be accelerated.

The invention relates to the technical field of chemiluminiscence immunoassay, in particular to a full-automatic chemiluminiscence immunoassay analyzer which comprises at least two groups of reagent modules, a pipetting module and a reaction module. A reagent strip is arranged in each group of reagent modules, and the reagent strip is provided with at least two sample cavities for accommodating reagent liquid and sample stock solution respectively, and a liquid storage cavity positioned at one side of each sample cavity; a pipetting module can suck and inject a sample stock solution into the sample cavity; a reaction module is used for sucking the reagent solution and the sample stock solution in the sample cavity and injecting the reagent solution and the sample stock solution into the liquid storage cavity for reaction, and comprises at least two groups of liquid suction assemblies, and each liquid suction assembly sucks the sample stock solution and the reagent solution in the corresponding reagent module into the liquid storage cavity. Each reagent module is provided with a sample cavity and a liquid storage cavity, reagent liquid is injected into the sample cavities, and sample stock solution is injected into the liquid storage cavities, so that the reagent liquid and the sample stock solution can be quickly mixed, the movement displacement between the reagent liquid and the sample stock solution is reduced, and the test efficiency is greatly improved.

The invention discloses a detection system of a sulfur hexafluoride density relay. The detection system having the precise calibration function is capable of calibrating temperature compensation values of multiple groups of density relays once and is capable of recycling sulfur hexafluoride gas. The detection system is composed of a calibration assembly and a high-and-low-temperature test box. Thehigh-and-low-temperature test box consists of a box body, a refrigeration system, a refrigeration system box, a compressor, a control module and an electrical cabinet; the electrical cabinet is arranged at one side of the box body; a control module and a memory are arranged in the electrical cabinet; and a compressor and a refrigeration system are arranged in the refrigeration system box. The boxbody is divided into a test chamber, a return air passage and a refrigeration system box by a lower chamber bottom plate and a test chamber sidewall; a condenser, a heater and a centrifugal fan are arranged in the return air passage; and an air outlet and a return air outlet are formed in the test chamber sidewall. A test frame for supporting density relays and a standard pressure gauge are arranged at a test rack. The calibration assembly includes a controller.

The invention provides a device for injecting a sweep frequency signal into a distribution transformer winding online. The device comprises a sweep frequency signal generator, a signal power amplifier and a capacitive coupling sensor, wherein the capacitive coupling sensor is disposed at the outside of a root of a sleeve of a transformer high-voltage outgoing line, the device further comprises a main controller, a data collection device and a Rogowski coil disposed at the outside of the root of a transformer neutral point sleeve, the collection device is respectively connected with the sweep frequency signal generator and the Rogowski coil, and the main controller is connected with the data collection device. By setting the capacitive coupling sensor to inject the sweep frequency signal into the winding of the transformer without contact, transformer deformation detection is performed in a non-contact manner without changing the system wiring, there is no influence on the transformer system, and the safety is high. The time interval of the sweep frequency signal generator to send the signals is set according to the change of the transformer parameter data, thereby not only ensuring the reliability of the online detection, but also prolonging the life of the device.

The invention discloses a feed automatic overturning mechanism of remote controller detection equipment. The feed automatic overturning mechanism comprises a support installed on a bottom plate, and arotary shaft is rotationally connected to the support. A first station capable of bearing a workpiece is arranged on one side of the rotary shaft. A second station used for bearing the workpiece is further fixedly connected to the rotary shaft. A driving mechanism driving the rotary shaft to rotate is connected to the rotary shaft. The driving mechanism drives the second station on the rotary shaft to rotate to be above the first station. The workpiece on the first station is picked up and transferred onto the second station and is then overturned. A vacuum sucker is used, locating guiding isadded, thus a remote controller can be sucked stably during equipment overturning, absolute accuracy of locating is ensured while overturning is conducted, stable reliability of the equipment is relatively enhanced, and reliability and precision of the feed automatic overturning mechanism can be ensured through the whole structural design.

The invention relates to the technical field of metal detection, and discloses a portable water body heavy metal detection device. The portable water body heavy metal detection device comprises two air bags and a box body, the air bags are symmetric with the box body as a center, arc blocks are fixedly installed at the tops of the air bags, fixing frames are fixedly connected to the upper surfacesof the arc blocks, and the air bags are connected with the box body through the arc blocks and the fixing frames. Compared with the prior art, the magnitude of buoyancy of the device in a water bodyis changed through the volume change of the air bags in water, so that the detection depth of the air bags in a polluted water body is adjusted; and meanwhile, by arranging a power device, thrust is provided for the device, the detection range of the device is increased, the air bags and the power device cooperate with each other, so that the device performs online detection at any place of the polluted water body, the sample sampling time is shortened, the detection efficiency is effectively improved, the number of detection is increased, so that more detection data are obtained, comparison is effectively formed, and the detection precision is increased.

The invention discloses an onboard device for real-time water quality monitoring. The device comprises a device main body, wherein a waterproof tank and a hovercraft are arranged on the device body, a test box is arranged in the middle inside the waterproof tank, a spring door is arranged at the bottom of the test box, a switch pipe is arranged at the top of the test box and electrically connected with a controller, and the controller is electrically connected with an onboard power supply through a converter; a color sensor and a wireless transmitter are mounted on the left side wall inside the waterproof tank, the color sensor is electrically connected with the controller, and an input end of the wireless transmitter is electrically connected with the controller. In the actual test process, the onboard device shows good performance, is stable and reliable in structure, can completely realize real-time detection of seawater quality onboard, has functions of identifying the color of test paper, increasing the test frequency and performing monitoring remotely, and is suitable for popularization and application.

The invention discloses a test method, device and equipment and a storage medium. The method comprises the following steps of: setting the same network address for server ports with a link redundancyrelationship in a server to be tested; wherein server ports of the to-be-tested server are connected with the switch; switching an on-off state with each server port by using the switch; wherein in unit time, the switch and only one target server port in the server ports are in an access state; and generating a test result according to the network state information of the to-be-tested server in the on-off state. According to the method, the probability of problem discovery in the test process is improved, and the test accuracy and reliability are relatively ensured. In addition, the inventionfurther provides a testing device, equipment and a storage medium, and the beneficial effects are the same as described above.