使循环

A dye recycled photosensitization system has been designed. As a result of studies in the mechanism of electron transfer reaction of xanthene iodonium salt, it is proposed that the dye-recycled process consists of three-step reactions during the photosensitization: The oxidative fading product of dye is formed through electron transfer under irradiation; In the presence of H-donor, product changes into acidic leuco dye product; Product undergoes deprotonization under action of base to regenerate initial dye.

本文设计了染料循环再生的光敏反应体系，通过对占吨碘翁盐电子反应机制的深入研究，提出了占吨染料在光敏反应过程中的染料再生循环，它依次由三个反应过程组成：在光作用下，通过电子转移反应，产生染料氧化褪色体；在H给体存在下，通过H转移反应，使产物转化为染料酸式隐色体；在碱作用下，发生去质子反应，染料再生回复到染料的起始结构。

Creating chorioretinal venous anastomosis potentially offers a means of permanently bypassing the site of obstruction to venous outflow, to recovery the retinal blood circulation and to reduce the retinal ischemia. It is one of the methods curing the reason of CRVO and is demonstrated effective in non-ischemic CRVO patients using laser-induced chorioretinal venous anastomosis. Patients with ischemic CRVO have more severe situations and high risk factors of later neovascular complications occuring, the surgery of via a pars plana vitrctomy combined chorioretinal venous anastomosis can be the newest attempting treatment.

其发病机理和病因目前仍未完全阐明，也没有有效的治疗措施；除常规的药物和针对新生血管并发症的视网膜光凝治疗以外，近年来开展的各种旨在重建或恢复视网膜血液循环的激光和手术治疗方法正日益成为眼科界关注的焦点；利用建立脉络膜视网膜静脉吻合途径，使被淤滞的静脉血流经由脉络膜血管流出眼外，促进或者恢复视网膜血液循环，减少视网膜缺血缺氧状态的发生，是多途径CRVO对因治疗的方法之一。

H.伸缩环转动环伸缩环垫片前轴封 S D / L D / S L M E C H A N I C A L S E A L P U M P S SD/LD/SL SERIES PUMPS The SD/LD/SL series are dependable, self priming pumps. The full motor horsepower is translated into fow via the shaft. These pumps are used for a wide range of applications, from chemical transfer to process solution recirculation to waste treatment. This series is capable of self-priming up ro 20 feet of lift. The mechanical seal is a self-cooling, Tefon bellows which is cooled by the solution being pumped. The construction materials and seals avaiable make this pump extremely versatile. The horizontal design has a working temperature from167℉ to 194℉(75℃ to 90℃), depending on the material of construction, and can handle most chemical solutions. The SD/LD/SL series pumps are designed to run outside the tank or process module. The SD/LD series pumps incorporate a FRPP molded base, legs and pump-to-motor casing. There are no bolts or metallic parts in contact with the solution being pumped.

SD/LD/SL泵是可靠的自吸泵，马达全部的马力经由轴心完全转化为流量，此型泵广泛地使用於从化学药水循环或加工溶液循环到废水处理等各种用途，此型泵可自吸达20英呎，机械轴封是自我冷却的，经由抽送的溶液来冷却，可供应的不同结构材质及轴封使此种泵的用途非常多样化，依其结构材料的不同，其卧式设计的工作温度由75℃到90℃(167℉到194℉)，而且可处理绝大部份的各种溶液，SD/LD/SL是设计用於槽外或加工模组之用，SD/LD加入一个FRPP射出成型的脚座，脚架及泵到马达的外罩，没有螺栓或金属会接触到所抽送的溶液。

This compressor but with dry device (adsorptive type, refrigerant type or draw type) form a complete set, make inside the dynamo outer circulation of hydric implementation airframe, ensure adsorptive type is dry the second birth of device is dry, although machine or turning condition stop to fall in the dynamo hydric still can be outside airframe is normal circulate, be worth in order to achieve the humidity inside the dynamo normally.

该缩小机可与躁热装置（附着式、冷藏式或者吸取式）匹配，使发电机内氢气完成体机外循环，保证附着式躁热装置的复生躁热，既便在发电机停机或者盘车态势下氢气仍可以在体机外正常循环，以达到和实现发电机内湿润程度正常值。

A method for cold transportation of goods that are placed in a hollow-walled refrigerating container, comprising the following steps: storage of a pumpable solution of tiny ice crystals, known as binary ice, having a given composition and temperature, in a binary ice store until said binary ice is used for refrigerating or filling purposes; the optionally filled wall of the refrigerating container that is to be used is emptied via an outlet valve for the binary ice; binary ice is allowed to circulate inside the refrigerating container via filling instruments that are supplied with binary ice from the binary ice store until the temperature of the wall drops to a given temperature, whereby the heated fluid that is discharged from the outlet valve is fed to a binary ice fluid store; the wall of the refrigerating container is filled with a given amount of binary ice; the refrigerating container is decoupled from the filling instruments; the binary fluid that result from the melted binary ice is returned to a corresponding binary fluid store in order to produce new binary ice from said binary fluid.

一种置于一中空壁制冷容器里的制品的冷运输用的方法包括下列诸步骤：将一种具有一预定的组成和温度的可被泵送的小的冰晶体的溶液保存在一个二元冰储槽中，直到所述的二元冰用于制冷或充填目的；通过一二元冰出口阀将待被使用的一制冷容器的随意被充填的壁排空；用二元冰充入该制冷容器的被排空的壁内；通过充填器具使该二元冰在该制冷容器里循环，这循环由来自二元冰储槽的二元冰供给，直到壁温下降到一预定值，从而从该出口阀放出的被加热的流体被提供给一个二元冰流体储槽；将一给定量的二元冰充入该制冷容器的壁里；从诸充填器具上拆离该制冷容器；将从溶化的二元冰形成的二元流体返回到一相应的二元流体储槽内，以便从所述的二元流体制取新的二元冰。

Due to the combustion of the CFBB is a low temperature fluid technology, it can burn the low heat value biological fuel.

采用循环流化床低温燃烧和分段燃烧技术，通过锅炉尾部凝汽换热设备将黑液加热浓缩，这样既可满足循环流化床锅炉燃烧的条件，又使得脱硫效率提高，SO2的生成量降低，且使各项排放指标均能达到环保排放标准。

Heat transfer cycle use liquid water to lower the temperature of vise chamber gas.

热转移循环方案能够为发动机提供更好的热保护，而且能够降低对发动机涡轮泵系统的增压要求，使发动机燃烧室的压力可以高于补燃循环。

The more-complete-expansion cycle is more efficient than the conventional diesel cycle.

使燃气更加充分膨胀的工作循环比传统的柴油活塞循环效率要高一些。

Rated at extraction conditions, one pump is running, because the cycle of water to reduce the system's water resistance decrease the flow of water pumps 12274T / H, head will drop to 15.0-16.0 m, in the extraction steam turbine at the maximum operating conditions, the recycled water to meet the system requirements to run a pump, because of substantial reduction in the volume of water supplied, so that substantially improve pump head, a direct result of the cooling tower water gushing, increase淋水device with a flow rate of the sink, fill up water in the hot淋水exchange reduce the time and reduces the cooling effect of cooling towers.

在额定抽汽工况下，一台水泵运行，由于循环水量减少、系统的水阻下降，水泵的流量12274T/H，扬程将下降至15.0-16.0米，在汽轮机在最大抽汽工况时，为满足循环水系统要求运行一台水泵，由于供水量大幅度减少，使水泵扬程大幅度提高，直接造成冷却塔涌水，加大淋水装置配水槽的流速，水流在淋水填料上热交换的时间减少，降低了冷却塔的冷却效果。

To the special request to polish the ashes of the circulation fluidized bed boiler in the thermal power station in Gao Keng,an automatic machine has been designed which can meet the demand of the circulation fluid bed pot fire grate dregs quantity big and continual,which can not only improve the thermal efficiency,operate safely and stably but alleviate the work strength and operating fees.

针对高坑电厂循环流化床锅炉对排渣的特殊要求，设计应用一种自动排渣器，能满足循环流化床锅炉排渣量大且连续的要求，使锅炉既提高热效率，安全稳定运行，又能减轻工人劳动强度，减少运行费用。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。