553 results about "Environmental stress" patented technology

The invention provides systems and methods for producing biofuel from algae wherein the algae and fishes are co-cultured in a body of water. The methods further comprise inducing the algae to accumulate lipids by environmental stress, and concentrating the algae prior to extraction of the algal oil. The systems of the invention comprise at least one growth enclosure, means for concentrating algae, and means for subjecting algae to environmental stress.

According to the present invention, there is provided a transgenic plant transformed with a DNA coding for the Arabidopsis thaliana DREB1A transcription factor of SEQ ID NO: 2, that binds to a stress responsive element, and regulates the transcription of genes located downstream of the element, the transgenic plant having improved tolerance to environmental stresses such as dehydration, low temperature and salt, and being free from dwarfing.

A PoF based method for calculating mission reliability of an electronic product comprises steps as follows: step one, information of all mission profiles of the product is collected, and an environment profile of each mission is determined; step two, thermal simulation and vibration simulation of environmental stress of each mission are performed, and a local response of the product to an environmental load is obtained; step three, a product simulation model is established; step four, simulation calculation of the product in all the mission profiles is completed, and the mean time to failure and a main failure mechanism of the product are obtained; and step five, the mission reliability of the product is calculated according to the mean time to failure. According to the PoF based method for calculating the mission reliability of the electronic product, all missions of the product during lifetime use are considered, the environmental stress of each mission is simulated, and the mean time to failure and the mission reliability of the product are comprehensively calculated. By means of a PoF model, the direction relation between parameters of a product material, structure, process and the like and the reliability can be obtained, and a design improvement direction is clearly and directly provided for the product.

Disclosed is a computing method of storage dynamic reliability for an aviation drive circuit module. The computing method includes steps of selecting, classifying and statistically analyzing main storage environmental stress; determining storage failure modes and failure mechanisms of the aviation drive circuit module; statistically analyzing storage environmental stress magnitudes; obtaining environmental test data of a component or a part on the premise that the failure mechanisms remain unchanged while the test environmental stress changes; computing life distribution characteristic parameters of various failure mechanisms in the module storage process; computing the life distributions of various failure mechanisms in the whole storage period; and obtaining an expression of the life distributions due to the life distribution characteristic parameters are known, integrating life distribution functions of various failure mechanisms in the storage period to obtain a failure probability F p (t) and a R p(t) reliability of various failure mechanisms at various times. According to the computing method of the storage dynamic reliability for the aviation drive circuit module, a more precise assessment result can be obtained on the premise of saving of test costs, and evidence can be provided for the reliability design of the aviation drive circuit module.

This invention relates to an automated process for efficiently treating an aqueous system with chlorine dioxide. The process results in high efficiency yields of chlorine dioxide on a continuous basis by minimizing the waste of precursor chemicals. Additionally, the process creates less environmental stress because the formation of unwanted by-products is minimized. The level of chlorine dioxide in the aqueous system treated and other parameters of the process are monitored and adjusted automatically to maintain them within acceptable levels.

A composite panel, which includes a heat spreading layer and a carbon foam core having desirable fire retardant properties, and resistance to environmental stress. The composite panel can also include a first layer and a second layer bound to a first surface and second surface of the carbon foam core. Applications of the panel include structural and fire retardant elements of residential and commercial buildings, aircraft and watercraft.

A cosmetic composition is provided having ingredients that may prevent signs of aging, improve the aesthetic appearance of skin, and promote recovery from environmental stresses. The composition includes natural ingredients, including at least one ingredient or extract from rosemary; at least one ingredient or extract from Centella, Echinacea, Alpinia or mixtures thereof; a DNA repair enzyme; and at least one pharmaceutically or cosmetically acceptable vehicle.

The present invention is a screen frame and screen positionable in most window frames and door frames. The invented screen frame is comprised of four screen frame segments joined together at corners to form a generally rectangular or multi-sided screen frame. Corner joint inserts are inserted in each corner of the four screen frame segments and the inserts are spot welded to adjoining screen frame segments to provide a sturdy and rigid screen frame. The screen frame segments are preferably stainless steel extrusions having two parallel flanges extending from a generally square shaped hollow body. An alternative construction of the screen frame is a continuous extruded segment that is notched at certain locations for bending and forming into a continuous screen frame having one junction requiring spot welding. A metal, preferably stainless steel screen is secured in the screen frame by spot welding the screen between the screen frame flanges of the screen frame segment. Stainless steel support pins are used to secure the screen frame enclosing the screen in a window frame casing. The screen frame and screen provides a long-lasting, corrosive resistant, and rigid frame and screen for positioning in window or door frames which withstand damage from intruders, projectiles, and environmental stresses.

The potent antioxidant N-acetylcysteine amide (NAC amide), or a physiologically acceptable derivative, salt, or ester thereof, is topically or exogenously applied to a plant, or part thereof, to reduce or prevent adverse reactions of plants and crops to environmental biotic and abiotic stresses, such as extremes of temperature, drought, humidity, frost, rain, as well as the presence or invasion of a variety of pests and pathogens. Such environmental stresses can result in oxidative stress and the correlated production (and buildup) of free radicals in plant cells, which damages plant cells and tissues and can lead to plant death. NAC amide reduces, prevents, alleviates, or otherwise counteracts such oxidative stress and free radical production, which adversely effect the overall growth and viability of the plant.

The illustrative embodiment of the invention is a munitions canister having a cover that is impervious to a variety of environmental stresses. In the illustrative embodiment, the cover includes a layer of rubber, which overlies a layer of sectioned, impact-resistant foam, which overlies a dome-shaped, structural member, which overlies a layer of acoustical dampening foam.

A grass with improved environmental stress tolerance and low animal toxicity is disclosed where the grass is infected with an isolated endophyte selected from the groups consisting of USDA-PI no. 269850, Ijoukak, Morocco 92060, Boumalne-de-Dades, Morocco KBG 5921, USDA-PI no. 516560, Oujda, Morocco KBG 5892, and mixtures and combinations thereof. A method for stably infecting the grasses is also disclosed.

The invention relates to a method for improving activity of antioxidant enzyme of festuca arundinacea by using fine domestic garbage compost under drought conditions. In the method, a plastic pot with diameter of 7cm and height of 10cm is used through a pot experiment; and the method comprises the steps of: putting 150g of soil into each pot; sowing 0.5g of lawn plants in each pot; uniformly spreading 3g of municipal domestic garbage fine compost with particle sizes of 1,200nm, 600nm and 300nm on the surface of the soil; uniformly covering 20g of soil on the surface of the soil; controlling the temperature to be between 20 and 26 DEG C, wherein the relative humidity is between 40 and 60 percent, and illumination is natural light transmitting indoors; fully watering the plants in the initial stage of sowing, and watering by weighing every day to every two days according to 55 to 65 percent of water-holding capacity in fields after two weeks so as to maintain the capacity within a stress range; and measuring all the indexes on the 44th day. A result shows that the fine compost protects the festuca arundinacea plant from being damaged by active oxygen radicals, and reduces adverse environmental stresses to the plant caused by drought stresses.

The invention provides a reliability design optimization method for an avionic device. By means of the reliability design optimization method for the avionic device, the reliability index of the device can be practically and effectively promoted in the design stage. According to the technical scheme, the method comprises the following steps that three-dimensional digital prototype modeling is conducted according to an avionic device design scheme; on the basis of a three-dimensional digital prototype, environmental stress digital prototype modeling is conducted according to a device working load, an environmental load and design information relevant to device characteristics, and a model is corrected and verified; thermal environment stress, mechanical environment stress and the like of the avionic device are analyzed by referring to environmental conditions, environmental stress weak links of the device are searched, and corresponding avionic device design optimization is conducted; a fault physical digital prototype model is built, environmental stress analysis results are introduced to conduct device fault risk prediction, avionic device design optimization is conducted aiming at the reliability weak links occurring in the analysis process, and the reliability level of the avionic device is evaluated according to the optimized fault risk distribution situation.

A process and method for the production of endophytes as plant inoculant products, specifically Clonostachys rosea strain 88-710, for the promotion of plant vigor, health, growth and yield are disclosed. The endophyte, Clonostachys rosea strain 88-710 produces a fungal conidial preparation by utilizing a discrete solid substrate fermentation system, namely Potato Dextrose Agar or Malt Extract Agar. Additionally, the endophyte, Clonostachys rosea strain 88-710, can act as an inoculant to stimulate and have an additive effect with rhizobium bacteria on the production of nitrogen fixing nodules on legumes and growth enhancement e.g. beans, soybeans, peas and alfalfa. As well, Clonostachys rosea strain 88-710, can combine with rooting hormones, e.g. indole-3-butyric acid (IBA) to provide inoculant and rooting benefits to cuttings / transplants of plants.

The invention discloses a combined test method for combining software reliability tests with hardware reliability tests. The combined test method is used for testing the reliability of software and hardware systems. The combined test method includes analyzing the software and hardware systems and constructing hardware reliability test profiles and software reliability test profiles; enabling software and hardware scenarios to be orthogonal to one another to acquire system task scenarios and determining execution probabilities of the system task scenarios; creating relation matrixes for determining whether the software reliability test profiles and hardware scenario profiles are associated with one another or not; combining corresponding hardware environmental stress test profiles with the associated software reliability test profiles to generate stage child profiles for each system task scenario; organizing the stage child profiles of the same system task to form a periodic child profile, organizing the periodic child profiles according to test cycle periods to generate final combined test profiles; generating test cases according to the combined test profiles and performing the tests. The combined test method has the advantages that the reliability of the systems can be accurately evaluated by the aid of test results generated by the method, and system failure which cannot be discovered in traditional reliability tests can be discovered by the aid of the combined test method.

Disclosed is a composition comprising a combination of: Polygonum fagopyrum seed extract, Chlorella vulgaris extract, palmitoyl wheat protein hydrolysate, algae extract, and tripeptide. The composition may further comprise one or more of the following: Citrus unshiu peel extract, Sphacelaria scoparia extract, Bambusa vulgaris extract, Pisum sativum (pea) extract, Evodia rutaecarpa fruit extract, and dipalmitoylhydroxy proline. Such compositions are useful in methods for aiding in improving skin firmness, lifting the skin, preventing or decreasing skin sagging, and preventing or decreasing visible signs of aging resulting from internal and external causes such as environmental stresses.

Transgenic plants are more tolerant to environmental stresses than untransformed plants. The pea ABR17 (Abscisic acid responsive 17) is used to enhance germination of plants such as Arabidopsis sp. and Brassica sp. while under multiple abiotic stresses, and to enhance the tolerance of these plants to these stresses. Three independently derived Arabidopsis transgenic lines, containing ABR17, germinated better in the presence of salt, cold temperature or both. The transgenic plants also exhibited enhanced tolerance to freezing temperature or extreme heat. Furthermore, the transgenic plants demonstrated early flowering even under normal, non-stressed conditions.

The present invention provides compounds that can protect mammalian cells from the damaging effects of chemotherapy, irradiation, or in other situations in which it is desirable to protect tissue from the consequences of clinical or environmental stress.

The present disclosure includes a method and / or a computer system for modeling the performance and lifetime of a photovoltaic module (PV). The method includes preparing a comprehensive finite element model; viscoelastic modeling of the encapsulant material of the PV; and orthotropic modeling of the silicon cells of the PV. It also includes carrying out the finite element model by including the predicted time to crack initiation due to temperature; and analyzing the temperature cycling fatigue of copper interconnects in the PV module, and analyzing the PV module under variable mechanical environmental stresses including temperature and sun exposure. Meteorological data are used for modeling the variable environmental stresses.

The invention belongs to the technical field of polymer modification and processing and relates to a modified linear low density poly vinyl foam material and a preparation method thereof. The modified linear low density poly vinyl foam material is prepared from the following components in parts by weight: 80-100 parts of linear low density poly vinyl, 10-35 parts of elastic toughening material, 3.5-4.5 parts of a plasticizer, 100-150 parts of filling agent, 2-6 parts of foaming agent, 60-105 parts of modified starch, 2.5-4.5 parts of processing auxiliary, 1.0-1.5 parts of crosslinking agent, 10-18 parts of fire retardant and 2.5-4 parts of flame retardant synergist. The modified linear low density poly vinyl foam material has good impact toughness and environmental stress; and the modified linear low density poly vinyl foam material is easy to degrade, pollution-free and environment-friendly and has good flame retardancy.

The invention provides a building U-shaped glass produced by taking waste glass as raw material, which is characterized by comprising chemical components with the mass ratio: 71.50-72% of SiO2, 1.20-1.30% of Al2O3, 0.15-0.20% of Fe2O3, 8.50-11.20% of CaO, 2.50-3.50% of MgO and 14.00-16.50% of Na2O. The doping quantity of the waste glass can be greatly increased and even approaches to 100%, so thatthe waste glass which is the industrial waste can be fully utilized, and the problems of environmental stress caused by the waste glass, land resource occupation and the like are fundamentally solved; meanwhile, as the using quantity of the waste glass is increased, the cost of raw materials of the production enterprises can be reduced, and smelting energy consumption is lowered; furthermore, themelting point of the waste glass is far lower than that of quartz sand, so that considerable economic and social benefits are brought to the production enterprises and the society. Therefore, the building U-shaped glass can ensure the glass shaping property, is beneficial to improving the finished product ratio and reducing the rejection rate, improves the quality of products, and protects the environment.

The invention discloses a method for preparing homogeneous tomato sauce with high dietary fiber content, which belongs to the technical field of comprehensive utilization of agricultural and sideline products. The method is implemented mainly by the steps of deodorizing bean dregs, and performing alkali liquor treatment, enzymolysis, decoloring, drying, extrusion cooking, drying and super micro milling to prepare super micro milled bean dreg dietary fiber flour for the preparation of the homogeneous tomato sauce with high viscosity and the high dietary fiber content. The method has the advantages that: 1, the high-activity soybean dietary fiber flour can be prepared from the bean dregs by performing the alkali liquor treatment, the enzymolysis, the extrusion cooking and the super micro milling, and has remarkably increased soluble dietary fiber content, remarkably improved water absorptivity and remarkably improved cation exchange capacity; 2, when used for preparing the tomato sauce,the soybean dietary fiber flour treated by the processes is homogenized by a 30 MPa homogenizer so as to make a sauce body more uniform and stable, increase the viscosity and health care value of thetomato sauce and improve the water absorptivity of the tomato sauce; and 3, the utilization of the bean dregs changes the conventional way of utilizing the bean dregs as feeds so as to reduce environmental stress at the same time of realizing reutilization.

The invention relates to a method for forecasting the service life of an intermediate frequency log amplifier based on failure physics. The method comprises the following six steps of: 1) analyzing failure information of a failure mode of intermediate frequency log amplifier electronic products and component information of a product structure technology, and confirming a potential failure mechanism and a failure physical model thereof; 2) confirming an environmental stress influencing the failure mechanism; 3) correcting related parameters in the deduced failure physical model by performing an accelerated ageing test; 4) utilizing an environmental stress sensor to monitor and record the environmental stress in the life cycle of the products; 5) utilizing the confirmed failure physical model to calculate a forecasted time to failure, namely, TTF, under different stress levels, and respectively calculating the life expenditure of the products caused by different failure mechanisms under each stress level according to an expenditure definition; and 6) forecasting the remained life of the products under different failure mechanisms, analyzing the reliability of the intermediate frequency log amplifier and obtaining the failure rate and reliability.

The invention discloses a method of testing stability of an Ethernet exchanger, including: 1, connecting all the ports of a sample machine to a flux generator; 2, setting port mode as self-adapting, closing flow control function, to make all the ports in a default state; 3, setting port speed of the generator as line speed and frame length random; also including: at least one of full-load testing, flux impact testing, sustained operation testing, limit testing and environmental stress testing, combined in arbitrary sequence to completely test stability of the Ethernet exchanger. Compared with existing techniques, it has broad covering area, high efficiency, remarkable effect and high resources utilization, achieves testing purpose, saves testing time and expenses, and enhance success rate of testing, and avoids heavy losses of users and product suppliers.

An isolation shelter includes, in its interior, an inner closure defining an isolation space. The isolation space is at a pressure less than the pressure of the environment in the shelter interior, at the outside of the inner enclosure. An outer enclosure of the shelter encloses a sealed region defined at least in part by a structural element contained within the shelter interior A sealed space, which is partially defined by any portion of the outer enclosure that can become exposed to the environment outside the outer enclosure, extends from the outer enclosure into the shelter interior. The sealed space is at a pressure exceeding the pressure of the environment outside of the shelter, thereby substantially preventing contamination in the environment outside the shelter from entering the shelter interior and passing to the isolation space. The pressure in the isolation space substantially prevents contaminants from escaping the isolation space into the environment outside the isolation shelter.