12,339 research outputs found
Microorganisms Obtained From The Synthetic Mushroom Compost I. The Isolation, Characterization and Utilization of Cellulolytic Bacteria in. the Synthetic Compost
No full text由於環境所限，無法收集馬廄材料栽培洋務，因而以人工方法調配，其主要材料來源為稻稈，植之經年，堪可媲美馬糞材料，但仍待改進之處尚多。洋務減產，堆肥調製未能臻善也為主要因素之一，是以堆肥製作良否，不但影響洋務產量而且尚能引起各種病蟲害的發生，故堆肥實為種植洋務最基本且重要的一項因子。實驗的目的是在尋求富於營養之洋菇栽培材料及分離優良品系之纖維素分解菌類，藉以促進堆肥材料之醱酵分解，求得適宜之代謝產物，提高堆肥養分並求節省堆製時間。本次實驗是在堆肥調製期中，分期採取含有織維素分解菌類之堆肥，携至室內，鏡檢，分離培養，再行純化，定性，而後反接種於纖維質類上鑑定其分解能力以及對洋菇菌絲發育上的比較測定，期以對於人工調製堆肥有所助益。
Proprietary composts or materials without horse manure have been available for many years. A formula for making compost from rice straw and standard fertilizers was developed by many workers. Several other synthetic composts are in fairly widespread use in some areas, these generally make use of materials not easily obtainable on Taiwan, The development of the short-composting process war carried out. It is most important to get rapid fermentation. This is done by having a stack with a loosely packed core which ensures aerobic compost. Meanwhile we put the isolated cellulolytic bacteria on the bed as an “activator”. These efforts have been so successful that it is now possible to prepare a good compost within less than two weeks of composting in the stack. We could even make commercial products for short-composting. This is the aim: produce a suitable compost without losses
Electrostatically atomized hydrocarbon sprays
No full textA burner using an electrostatic method to produce and control a fuel spray is investigated for non-burning sprays. The burner has a charge injection nozzle and the liquid flow rate and charge injection rate are varied using hydrocarbon liquids of differing viscosities, surface tensions and electrical conductivities (kerosene, white spirit and diesel oil). Droplet size distributions are measured and it is shown how the dropsize, spray pattern, breakup mechanism and breakup length depend on the above variables, and in particular on the specific charge achieved in the spray. The data are valuable for validating two computer models under development. One predicts the electric field and flow field inside the nozzle as a function of emitter potential, geometry and flow rate. The other predicts the effect of charge on spray dispersion, with a view to optimizing spray combustion. It is shown that electrostatic disruptive forces can be used to atomize oils at flow rates commensurate with practical combustion systems and that the charge injection technique is particularly suitable for highly resistive liquids. Possible limitations requiring further research include the need to control the wide spray angle, which may provide fuel-air mixtures too lean near the nozzle, and the need to design for maximum charge injection rate, which is thought to be limited by corona breakdown in the gas near the nozzle orifice
Fear of death and good death among the young and elderly with terminal cancers in Taiwan
No full textElectrostatic atomization of insulating oils and the associated charge injection mechanism
No full textPerformance Evaluation of Distributed-Antenna Communications Systems Using Beam-Hopping
No full textDigital beamforming (DBF) techniques are capable of improving the performance of communications systems significantly. However, if the transmitted signals are conflicted with strong interference, especially, in the direction of the transmitted beams , these directional jamming signals will severely degrade the system performance. In order to efficiently mitigate the interference of the directional jammers, in this contribution a beam-hopping (BH) communications scheme is proposed. In the proposed BH communications scheme, only one pair of the beams is used for transmission and it hops from one to the next according to an assigned BH pattern. In this contribution a range of expressions in terms of the average SINR performance have been derived, when both the uplink and downlink are considered. The average SINR performance of the proposed BH scheme and that of the conventional single-beam (SB) as well as multiple-beam (MB) assisted beam-processing schemes have been investigated. Our analysis and results show that the proposed BH scheme is capable of efficiently combating the directional jamming, with the aid of utilizing the directional gain of the beams generated by both the transmitter and the receiver. Furthermore, the BH scheme is capable of reducing the intercept probability of the communications. Therefore, the proposed BH scheme is suitable for communications, when several distributed antenna arrays are available around a mobile
Tun hu: (du mu ju ji).
No full text復工之前 -- 母女們 -- 囤戶.吳天著.Drama.Wu Tian zhu.Fu gong zhi qian -- Mu nü men -- Tun hu
Flow dynamics on a U shaped channel flow: a numerical study
No full textThe paper deals with the numerical simulation of river channel flows at laboratory scale. The adopted geometry
consists of a U shaped trapezoidal smooth open channel with fixed slope. The branches, 3m of length each, are linked with a joint, 0.40m long, realizing two 90 degrees bends. The system is fed upstream with a water discharge under critical conditions while a Cipolletti weir is set downstream to control flow profiles.
Steady flow movements are obtained by means of two different softwares: a pure Lagrangian developed by the author, based on the Weakly Compressible Smoothed Particle Hydrodynamics (WCSPH) technique and Flow3D®, a commercial CFD software based on a Finite Volume formulation of the Navier Stokes equations in the Eulerian framework. Depending on the assumed boundary conditions, velocity profiles and water interfaces at certain cross sections are deducted by using the codes. Results are discussed and compared, showing a satisfactory agreement
Scheduling Reusable Instructions for Power Reduction
No full textIn this paper, we propose a new issue queue design that is capable of scheduling reusable instructions. Once the issue queue is reusing instructions, no instruction cache access is needed since the instructions are supplied by the issue queue itself. Furthermore, dynamic branch prediction and instruction decoding can also be avoided permitting the gating of the front-end stages of the pipeline (the stages before register renaming). Results using array-intensive codes show that up to 82% of the total execution cycles, the pipeline front-end can be gated, providing a power reduction of 72% in the instruction cache, 33% in the branch predictor, and 21% in the issue queue, respectively, at a small performance cost. Our analysis of compiler optimizations indicates that the power savings can be further improved by using optimized code
Studies On Mushroom Nutrition 1. The chemical composition of rice-straw composts
No full text為期究明稻葉堆肥之化學成分及洋菇栽培期中各成分之變化情形以供調製洋菇堆肥之參考，玆就本所食用菇研究室所製：(1)現行一般堆積，(2)三角架堆積，(3)過熟老堆肥三種及材料稻葉分別測定其化學組成分，所得結果摘要如下：
1.稻葉堆肥之主要成分為半纖維素，纖維素，木素，蛋白質及灰分，而冷水熱水可溶物及乙醚，乙醇可溶物之含量均較少，其與稻藥相比則半纖維素，纖維素量減少而木素，蛋白質及灰分增加，且其增減之幅度頗大，而熱水可溶物稍增加外其他成分均示減少傾向。
2.現行一般堆積者，水分11.34%，灰分25.99%，pH6.5，C/N率22，乙醚可溶物0.987%，冷水可溶物4.27%，熱水可溶物1.73%，乙醇可溶物0.538%，半纖維素5.793%，纖維素15.821%，木素14.279%，蛋白質8.438%。
In order to understand the degradation of mushroom compost and to seek a suitable compost for mushroom cultivation, three types of stacking: (1) general stack, (2) triangle stack and (3) over-compost were selected for chemical analysis together with the raw material of rice-straw was served as control. The air dry materials were used for all analysis. The results are shown as follows.
(1) The major component of rice-straw compost consisted of hemicellulose, cellulose, lignin, protein and ash, although containing little fractions of water and ether soluble. In comparison with the raw material, the general stacking decreased in the contents of hemicellulose, cellulose, cold water soluble fraction, ether soluble fraction and alcohol soluble fraction, while increased in the contents of lignin, protein, hot water soluble fraction and ash.
(2) The general stacking consisted of moisture 11.34%, ash 25.99%, C/N ratio 22.5, ether soluble fraction 0.987%, cold water soluble fraction 4.27%, hot water soluble fraction 1.73%, alcohol soluble fraction 0.538%, hernicellulose 5.793%, cellulose 15.821%, lignin 14.279% and protein 8.438%. The pH of the compost was 6.5
HU Protein Induces Incoherent DNA Persistence Length
No full textHU is a highly conserved protein that is believed to play an important role in the architecture and dynamic compaction of bacterial DNA. Its ability to control DNA bending is crucial for functions such as transcription and replication. The effects of HU on the DNA structure have been studied so far mainly by single molecule methods that require us to apply stretching forces on the DNA and therefore may perturb the DNA-protein interaction. To overcome this hurdle, we study the effect of HU on the DNA structure without applying external forces by using an improved tethered particle motion method. By combining the results with DNA curvature analysis from atomic force microscopy measurements we find that the DNA consists of two different curvature distributions and the measured persistence length is determined by their interplay. As a result, the effective persistence length adopts a bimodal property that depends primarily on the HU concentration. The results can be explained according to a recently suggested model that distinguishes single protein binding from cooperative protein binding.Imaging Science and TechnologyApplied Science
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