Xem 1-20 trên 43 kết quả Drying systems
  • Energy is important for the existence and development of humankind and is a key issue in international politics, the economy, military preparedness, and diplomacy. To reduce the impact of conventional energy sources on the environment, much attention should be paid to the development of new energy and renewable energy resources. Solar energy, which is environment friendly, is renewable and can serve as a sustainable energy source. Hence, it will certainly become an important part of the future energy structure with the increasingly drying up of the terrestrial fossil fuel.

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  • In most HVAC systems, the final energy transport medium is moist air—a mixture of dry air and water vapor. This is conveyed through filters, heat exchange equipment, ducts, and various terminal devices to the space to be air-conditioned. The power to move the air is supplied by fans. This chapter discusses fans and duct systems, together with related subjects such as grilles, registers, diffusers, dampers, filters, and noise control.

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  • This contribution book collects reviews and original articles from eminent experts working in the interdisciplinary arena of novel drug delivery systems and their uses. From their direct and recent experience, the readers can achieve a wide vision on the new and ongoing potentialities of different drug delivery systems. Since the advent of analytical techniques and capabilities to measure particle sizes in nanometer ranges, there has been tremendous interest in the use of nanoparticles for more efficient methods of drug delivery.

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  • Unit 17: Post – Harvest system outlines the steps involved in traditional processing of cereals. It is vital that project planners and managers consider the traditional technologies in their particular socio – economic context when introducing any technical improvements or adaptations.

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  • Tham khảo tài liệu 'thiết kế hệ thống sấy dầu fo dùng cho lò hơi bằng thiết bị trao đổi nhiệt ống lồng ống sử dụng năng lượng mặt trời designing a system for drying boiler fuel oil with a double tube heat exchanger device using solar engergy', kỹ thuật - công nghệ, hoá học - dầu khí phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • 3.1 Theory and Principles Harold Moore 3.2 Power Transformers H. Jin Sim and Scott H. Digby 3.3 Distribution Transformers Dudley L. Galloway 3.4 Underground Distribution Transformers Dan Mulkey 3.5 Dry Type Transformers Paulette A. Payne 3.6 Step-Voltage Regulators Craig A. Colopy 3.7 Reactors Richard Dudley, Antonio Castanheira, and Michael Sharp 3.8 Instrument Transformers Randy Mullikin and Anthony J. Jonnatti 3.9 Transformer Connections Dan D. Perco 3.10 LTC Control and Transformer Paralleling James H. Harlow 3.11 Loading Power Transformers Robert F. Tillman, Jr. 3.

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  • Nearly six tenths of the earth's land surface receive an annual rainfall of less than twenty inches, and can be reclaimed for agricultural purposes only by irrigation and dry-farming. A perfected world-system of irrigation will convert about one tenth of this vast area into an incomparably fruitful garden, leaving about one half of the earth's land surface to be reclaimed, if at all, by the methods of dry-farming.

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  • High specific surface area. The amount of gas–liquid surface area per unit volume of material that is attainable in a foam is greater than that in comparable two-phase systems. This property makes gas–liquid foam particularly attractive for interphase mass transfer operations. Examples of such processes are froth flotation, in which valuable hydrophobic particles are recovered from a slurry, the recovery of oil sands, and the stripping of gases from effluent by absorption into the liquid phase....

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  • Some terms, which will be repeated throughout this book, shall be defined more precisely: . . . . ‘‘Portable batteries’’ are understood to be all kinds of electrochemical energy-storing devices used in portable appliances regardless of whether they are rechargeable or not. Non-rechargeable batteries are called primary cells (batteries) or dry cells (batteries). Rechargeable batteries are called secondary batteries or accumulators. Also the terms ‘‘galvanic primary’’ and ‘‘galvanic secondary’’ cells are common. ...

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  • There are many factors accounting for losses after rice harvest and occurs as as early as pre-harvest period and the next stage from harvesting to storage. the the appearance of cracks in the rice-harvest period reduces the yield. Grain can be damaged or lost quantity and quality due to inappropriate practice in the sun time, harvest, harvest, dam / mechanical drying, loading / unloading, transport, milling and processing storage conditions. Milling process is an important stage because it produces the final product (white rice). Post production lines of rice.

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  • They give sodium tail currents with relative longterm constants (Wright, et al., 1988). At lower doses more suble repetitive behavior is seen (Brodie and Aldridge, 1982). As with type I pyrethroids, the primary action is on the central nervous system, since symptoms correlate well with brain concentrations (Rickard and Brodie, 1985). As might be expected, both classes of parathyroid produce large increases in brain glucose utilization (Cremer et al. 1983).

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  • Irrigation-farming and dry-farming are both systems of agriculture devised for the reclamation of countries that ordinarily receive an annual rainfall of twenty inches or less. Irrigation-farming cannot of itself reclaim the arid regions of the world, for the available water supply of arid countries when it shall have been conserved in the best possible way cannot be made to irrigate more than one fifth of the thirsty land.

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  • Changing climate and rainfall patterns are expected to have significant impacts on agricultural productivity, especially in arid and semi‐arid regions that are already marginal for agriculture. Most climate modeling scenarios indicate that the dry lands of West and Central Asia and North Africa, for instance, will be severely affected by droughts and high temperatures in the years to come. This could lead to land degradation and agricultural expansion.

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  • The acre-yields of crops on dry-farms, even under the most favorable methods of culture, are likely to be much smaller than in humid sections with fertile soils. The necessity for frequent fallowing or resting periods over a large portion of the dry-farm territory further decreases the average annual yield.

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  • Improvements in ethanol’s energy consumption have continued since large- scale commercial production began in the 1970s. The process has become more efficient at using the starch in the corn kernel, approaching the theo- retical limit of about 2.85 gallons of ethanol per bushel. Energy for conver- sion has fallen from as high as 70,000 Btu’s per gallon in the late 1970s (Wang, August 1999) to 40,000 Btu’s or less for modern dry mills and to 40,000-50,000 Btu’s for wet mills. Modern energy-saving technology and process optimization account for the improvement....

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  • Summarizing the offers made, we are proud to say that not only is the university one of the biggest training schools for business administration and engineering, but it also is one of the most re- spected, as shown by recent rankings. The university ranking system developed by the Centre for Higher Education Development (CHE, Centrum für Hochschulentwicklung) places our department in the top group with regard to reputation of professors, laboratory equipment and study conditions.

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  • Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: "An artificial regeneration system for establishing northern red oak on dry-mesic sites in the Lake States, USA...

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  • As a mathematician one is accustomed to many things. Hardly any other academics encounter as much prejudice as we do. To most people, mathematics is the most colourless of all school subjects - incomprehensible, boring, or just terribly dry. And presumably, we mathematicians must be the same, or at least somewhat strange. We deal with a subject that (as everyone knows) is actually complete. Can there still be anything left to find out? And if yes, then surely it must be totally uninteresting, or even superfluous....

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  • The first reported CMOS-MEMS processes produce microstructural sidewalls by stacking the drain/source con- tact cut and metal via cuts in the CMOS and removing the metallization layers above the cuts [13]. The substrate is exposed in the cut regions. A wet or dry isotropic silicon etch undercuts and releases the microstructures. Gaps between microstructures are limited to several microns because of artifacts in the etch pits from etching metal above the CMOS contacts.

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  • Plant parts are probably the most difficult to identify as they consist of pieces of dried roots, barks, leaves, berries etc. at varying stages of processing, and can look fairly similar to one another. It is not worthwhile for enforcers to learn to identify such raw materials unless they are going to deal with such shipments or domestic trade on a regular basis. It is best to use experts when packaging for raw materials is not labeled.

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