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黑龙江省黑河市自由贸易试验片区建设方案
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作者 成榕 《中国市场》 2020年第24期28-29,共2页
黑河市获批国家自由贸易试验片区。文章介绍了黑龙江省跨境经济合作黑河试验区情况,阐释黑河经济制度安排的模式差异,论证黑河试验片区对外开放的目的及定位选择,明确黑河建立自由贸易试验片区的战略意义,直击其建设的基础和理论根源,... 黑河市获批国家自由贸易试验片区。文章介绍了黑龙江省跨境经济合作黑河试验区情况,阐释黑河经济制度安排的模式差异,论证黑河试验片区对外开放的目的及定位选择,明确黑河建立自由贸易试验片区的战略意义,直击其建设的基础和理论根源,提出了建立沿边口岸物流枢纽的瓶颈及解决对策。 展开更多
关键词 黑河市 自由贸易试验片 建设方案
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谈几种腐蚀在线监测技术 被引量:7
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作者 徐小易 《全面腐蚀控制》 2001年第3期45-47,共3页
关键词 腐蚀 在线监测技术 失重试验片 试片架 探头式腐蚀测量仪器
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SONY PMW-F55使用心得
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作者 唐迅 《影视制作》 2014年第4期92-93,共2页
本着更方便更多的来积累4K素材的初衷,我们经过多次调研,在原有SONY F65摄影机的基础上,添置了同样来自于索尼CineAlta 4K产品线上的SONY PMW-F55(以下简称F55)摄影机。经过一段时间的使用,跟大家分享一下一些在使用F55过程中的心得。从... 本着更方便更多的来积累4K素材的初衷,我们经过多次调研,在原有SONY F65摄影机的基础上,添置了同样来自于索尼CineAlta 4K产品线上的SONY PMW-F55(以下简称F55)摄影机。经过一段时间的使用,跟大家分享一下一些在使用F55过程中的心得。从2012年下半年开始,我们陆陆续续拍摄了一些4K素材。 展开更多
关键词 摄影机 试验片 监视器 心得 积累 画面 下半年 调研 制作 镜头
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断针和检针管理实操指南 被引量:1
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作者 梁斌 许小红 《中国制衣》 2007年第4期80-81,共2页
服装作为消费品,其安全、卫生、环保等一系列技术要求已经演绎为新的贸易壁垒。对服装出口企业而言,断针检测是一项基本的安全要求。日本干1994年就开始实施产品责任法,其目的是通过对产品制造商等施加生产责任的压力来减轻消费者因为... 服装作为消费品,其安全、卫生、环保等一系列技术要求已经演绎为新的贸易壁垒。对服装出口企业而言,断针检测是一项基本的安全要求。日本干1994年就开始实施产品责任法,其目的是通过对产品制造商等施加生产责任的压力来减轻消费者因为产品的缺陷而导致的责任归属问题。所谓的生产责任是指当产品制造商等提交的生产、制造。 展开更多
关键词 断针 消费者 试验片 管理制度 输送带 管理人员 产品制造 灵敏度 管理要求 校准周期
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谈回归分析在工业生产中的应用
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作者 吴已力 《数理统计与管理》 1983年第6期9-10,共2页
“回归分析是处理变量间相关关系的有力工具。它不仅提供了建立变量间关系的数学表达式──通常称为经验公式──的一般方法,而且利用概率统计基础知识进行了分析讨论,从而能帮助实际工作者如何去判明所建立的经验公式的有效性,以及... “回归分析是处理变量间相关关系的有力工具。它不仅提供了建立变量间关系的数学表达式──通常称为经验公式──的一般方法,而且利用概率统计基础知识进行了分析讨论,从而能帮助实际工作者如何去判明所建立的经验公式的有效性,以及如何利用所得到的经验公式去达到预测、控制等目的。因此,回归分析方法得到越来越广泛的应用,而方法本身也在不断丰富,发展。” 展开更多
关键词 回归分析 工业生产 螺纹塞规 测功器 回归方程 紧密距 一元回归 缺失数据 经验方程 试验片
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Optimization of the Formula of Maca Lozenges by Orthogonal Test
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作者 徐天才 杨少华 +2 位作者 赵菊 谭敬菊 薛润光 《Agricultural Science & Technology》 CAS 2014年第6期994-998,1019,共6页
The orthogonal experimental design was used to optimize the formula of maca lozenge and explore the preparation techniques and product property of maca lozenges. With the sensory evaluation of maca lozenge as the indi... The orthogonal experimental design was used to optimize the formula of maca lozenge and explore the preparation techniques and product property of maca lozenges. With the sensory evaluation of maca lozenge as the indicator, L16 (44) orthogonal design graph was used to select the optimal techniques, and to investigate the stability, heavy metals and microorganisms contents in the tablets. The optimal formula was 80% of maca power, 12% of Rhodiola rosea powder, and 6% of Angelica sinensis powder, where the comprehensive sensory index reached 246. Moreover, under the optimal conditions, various kinds of heavy metals contents were in consistent with the GB164740 standards, and there was no significant change in color, size, friability, and disintegration time, as well as microorganism content during the 12-month preservation. With simple, easy and reliable technique and quality control method, the process study had obtained the national patent process (patent number: ZL200810233796.X), and the contents of heavy metals and micr6organisms laid foundation for the quality standard. 展开更多
关键词 Maca lozenge Rhodiola rosea Orthogonal design Sensory evaluation
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塑料铅笔擦
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《中国制笔》 1996年第Z1期69-74,共6页
1、适用范围本发明对用于擦试铅笔字迹的塑料擦(以下简称“铅笔擦”)作出规定.注(1)是指JIS S 6006标准规定的铅笔以及JIS S 6005标准规定的活动铅笔用芯,或同等以上的产品.备考 本文引用标准如下:JIS K 0050化学分析方法通则JIS K 0121... 1、适用范围本发明对用于擦试铅笔字迹的塑料擦(以下简称“铅笔擦”)作出规定.注(1)是指JIS S 6006标准规定的铅笔以及JIS S 6005标准规定的活动铅笔用芯,或同等以上的产品.备考 本文引用标准如下:JIS K 0050化学分析方法通则JIS K 0121 原子吸光分析通则JIS P 3201 书写用纸JIS P 6005 铅笔、色芯铅笔及活动铅笔用芯JIS S 6006 铅笔及色芯铅笔2、品质2.1外观 铅笔擦外形应匀整,无裂纹、气泡.混入异物及其它使用上的障碍,无污染,以及外观上显著损坏等缺点. 展开更多
关键词 铅笔擦 试验方法 有害物质 试验片 着色纸 无焰法 活动铅笔 吸光分析 玩具安全 化学分析方法
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Research on the cutting force of a pick 被引量:20
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作者 LIU Song-yong DU Chang-long CUI Xin-xia 《Mining Science and Technology》 EI CAS 2009年第4期514-517,共4页
Cutting tests were done using a test bed designed to measure pick cutting forces when cutting coal and rock.The test equipment has a drum with two starting helical vanes.Cutting forces on a pick were measured as a fun... Cutting tests were done using a test bed designed to measure pick cutting forces when cutting coal and rock.The test equipment has a drum with two starting helical vanes.Cutting forces on a pick were measured as a function of coal compressive strength,pick carbide tip diameter and the cutting depth per drum revolution.The results show that the cutting force is linearly related to the compressive strength.The relationship between the cutting force and both the carbide tip diameter and the cutting depth are exponential.Fluctuation in the cutting force does not increase with coal compressive strength but it has a linear relationship to tip diameter.A plot of cutting force fluctuations versus the cutting depth follows a sigmoidal curve.Based on the analysis of these test results a theoretical basis is supplied for design and effective use of shearer drums. 展开更多
关键词 PICK cutting force SHEARER cutting theory carbide tip diameter cutting depth
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Test and Numerical Analysis on Performance of Reinforced Concrete Segment in Subway Tunnel 被引量:2
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作者 ZHOU Haiying CHEN Tingguo LI Lixin 《Transactions of Tianjin University》 EI CAS 2012年第1期57-61,共5页
To investigate the mechanical behavior of segmental lining, a three-dimensional numerical analysis and test using three actual segments were used to analyze the effects of axial force and reinforcement ratio on the fa... To investigate the mechanical behavior of segmental lining, a three-dimensional numerical analysis and test using three actual segments were used to analyze the effects of axial force and reinforcement ratio on the failure mechanism and ultimate bearing capacity of segmental lining. Both numerical and test results confirmed that the cracking load, yield and ultimate load were strongly influenced by axial force, and it was also proved that the yield and ultimate load would increase with the increase of reinforcement ratio, but the cracking load was almost not affected. The cracking load, yield and ultimate load are about 28.7%, 500% and 460% larger due to the effect of axial force respectively. The comparison between numerical calculation and test results showed that the finite element analysis resuits were in good agreement with the test results. 展开更多
关键词 shield tunnel segmental lining numerical analysis finite element model
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A Physical Simulation Test for the RockBurst in Tunnels 被引量:3
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作者 LI Tianbin WANG Xiangfeng MENG Lubo 《Journal of Mountain Science》 SCIE CSCD 2011年第2期278-285,共8页
According to the test results of the physical and mechanical properties of similar materials in various quality mixture, a type of material with obvious tendency of rockburst was selected to produce a large-size model... According to the test results of the physical and mechanical properties of similar materials in various quality mixture, a type of material with obvious tendency of rockburst was selected to produce a large-size model to simulate rockburst phenomena in tunnels. The prototype model comes from a typical section of diversion tunnels in Jinping Hydropower Station in China. The simulation of excavating tunnels is carried out by opening a hole in the model after loading. The modeling results indicated that under the condition of normal stresses in the model boundaries the arch top, spandrel and side walls of the tunnel produced an obvious jump reaction of stress and strain and the acoustic emission counts of the surrounding rock also increased rapidly in a different time period after the "tunnel" excavation, showing the clear features of rockburst. The spalling, buckling and breaking occurred in the surrounding rock of model in conditions of over loading. It is concluded that the modeling tunnel segment in Jinping Hydropower Station is expected to form the tensile rockburst with the pattern of spalling, buckling and breaking. 展开更多
关键词 ROCKBURST Physical simulation Similar materials (Gypsum Cement Sand Water) Strain jump SPALLING BUCKLING BREAKING
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A prospective randomized trial of transnasal ileus tube vs nasogastric tube for adhesive small bowel obstruction 被引量:46
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作者 Xiao-Li Chen Feng Ji +5 位作者 Qi Lin Yi-Peng Chen Jian-Jiang Lin Feng Ye Ji-Ren Yu Yi-Jun Wu 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第16期1968-1974,共7页
AIM:To study the therapeutic efficacy of a new transnasal ileus tube advanced endoscopically for adhesive small bowel obstruction.METHODS:A total of 186 patients with adhesive small bowel obstruction treated from Sept... AIM:To study the therapeutic efficacy of a new transnasal ileus tube advanced endoscopically for adhesive small bowel obstruction.METHODS:A total of 186 patients with adhesive small bowel obstruction treated from September 2007 to February 2011 were enrolled into this prospective randomized controlled study.The endoscopically advanced new ileus tube was used for gastrointestinal decompression in 96 patients and ordinary nasogastric tube(NGT) was used in 90 patients.The therapeutic efficacy was compared between the two groups.RESULTS:Compared with the NGT group,the ileus tube group experienced significantly shorter time for relief of clinical symptoms and improvement in the findings of abdominal radiograph(4.1 ± 2.3 d vs 8.5 ± 5.0 d) and laboratory tests(P < 0.01).The overall effectiveness rate was up to 89.6% in the ileus tube group and 46.7% in the NGT group(P < 0.01).And 10.4% of the patients in the ileus tube group and 53.3% of the NGT group underwent surgery.For recurrent adhesive bowel obstruction,ileus tube was also significantly more effective than NGT(95.8% vs 31.6%).In the ileus tube group,the drainage output on the first day and the length of hospital stay were significantly different depending on the treatment success or failure(P < 0.05).The abdominal radiographic improvement was correlated with whether or not the patient underwent surgery.CONCLUSION:Ileus tube can be used for adhesive small bowel obstruction.Endoscopic placement of the ileus tube is convenient and worthy to be promoted despite the potential risks. 展开更多
关键词 ADHESIVE Small bowel obstruction Ileus tube Nasogastric intubation Gastrointestinal decompression
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Influence of a Deflector or a Wall on Savonius Rotor Efficiency 被引量:1
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作者 A.H. Chauvin N. Belouaggadia B. Kamoun 《Journal of Environmental Science and Engineering》 2011年第10期1294-1296,共3页
The Savonius rotor is a vertical axis-wind machine composed of two half cylindrical blades presenting a central gap. It is a slow velocity machine compared with horizontal wind machines. Its efficiency is about twenty... The Savonius rotor is a vertical axis-wind machine composed of two half cylindrical blades presenting a central gap. It is a slow velocity machine compared with horizontal wind machines. Its efficiency is about twenty per cent. In this work experimental tests are presented using two kind of deflectors placed in front of the resistive blade. Such disposition allows to hide the resistant blade and to guide the flow toward the motrice blade. Two deflectors have been used: a short one and a long one. The results obtained in wind tunnel have shown that the long deflector is the more efficient, essentially for high values of the tip speed ratio. One has been interested, using a numerical approach, in the study of the influence of a wall on the aerodynamical field near the rotor. 展开更多
关键词 Wind energy vertical axis wind machine power coefficient.
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Experimental study on performance of contra-rotating axial flow fan 被引量:4
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作者 Shizhai Zhang 《International Journal of Coal Science & Technology》 EI 2015年第3期232-236,共5页
Contra-rotating axial flow fan is a kind of the vital equipment in coal mines. Their work conditions directly affect the safety of staff and production. In the paper, the performance of the contra-rotating axial flow ... Contra-rotating axial flow fan is a kind of the vital equipment in coal mines. Their work conditions directly affect the safety of staff and production. In the paper, the performance of the contra-rotating axial flow fan is experi- mentally investigated. The study is focused on the fan performance, the shaft power and the match between the motor and fan efficiency at different blade angles. The results show that the blade angle 43°/26° has the best aerodynamic perfor- mance. The first engine has a greater impact on the fan than the second one. The blade angle with the best aerodynamic performance does not necessarily correspond to the one with the best match between the motor and fan efficiency. The blade angle 43°/24° is the best choice for the operation of the fan in the present study. 展开更多
关键词 Contra-rotating axial flow fan Fan performance Shaft power Blade angle
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Successful Commercial Test of Novel Desulfurizing Agent at SINOPEC Shanghai Gaoqiao Branch Company
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《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2016年第4期91-91,共1页
The novel JX-7 jet fuel desulfurizing agent has been successful tested in commercial scale on the jet fuel hydrotreating unit at the SINOPEC Gaoqiao Branch Company,while delivering a jet fuel with its silver strip cor... The novel JX-7 jet fuel desulfurizing agent has been successful tested in commercial scale on the jet fuel hydrotreating unit at the SINOPEC Gaoqiao Branch Company,while delivering a jet fuel with its silver strip corrosion indicator meeting the military jet fuel standard. 展开更多
关键词 military silver strip indicator filled remove everything leaving enters connected
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Influence of Waste Tire Chips on Strength Characteristics of Soils
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作者 Baleshwar Singh Valliapan Vinot 《Journal of Civil Engineering and Architecture》 2011年第9期819-827,共9页
An experimental study was conducted to investigate the effect of waste tire chips on the strength characteristics of two soils. A cohesive clayey silt soil and a cohesionless free sand soil were used. A program of sta... An experimental study was conducted to investigate the effect of waste tire chips on the strength characteristics of two soils. A cohesive clayey silt soil and a cohesionless free sand soil were used. A program of standard Proctor tests, unconfined compression tests and California bearing ratio tests was carried out on specimens of the cohesive soft-tire mixtures, by varying tire chips content from 5% to 20% by weight of the soil. Vibratory compaction tests and direct shear tests were conducted on the cohesioliless soft-tire mixtures by adding tire chips varying from 10% to 50% by weight. The results showed that 13% and 30% chip contents, respectively by weight, were optimum for composite strength of the two reinforced soil mixtttres. 展开更多
关键词 Soil-tire mixtures unconfmed compressive strength California bearing ratio direct shear strength.
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Experimental study of the wake characteristics of a two-blade horizontal axis wind turbine by time-resolved PIV 被引量:5
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作者 ZHANG LiRu XING JiangKuan +7 位作者 WANG JianWen YUAN RenYu DONG XueQing MA JianLong LUO Kun QIU KunZan NI MingJiang CEN KeFa 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2017年第4期593-601,共9页
Wind tunnel experiments of the wake characteristics of a two-blade wind turbine, in the downstream region of 0
关键词 two-blade wind turbine time resolved particle image velocimetry tip speed ratio wake characteristics leapfrogging phenomenon
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Experimental study of the effect of blade tip clearance and blade angle error on the performance of mixed-flow pump 被引量:13
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作者 BING Hao CAO ShuLiang +1 位作者 HE ChengLian LU Li 《Science China(Technological Sciences)》 SCIE EI CAS 2013年第2期293-298,共6页
The hydraulic performance test of the mixed-flow pump has been carried out through selecting different blade tip clearances and various blade angle errors.The ratio of the mixed-flow pump efficiency reduction and the ... The hydraulic performance test of the mixed-flow pump has been carried out through selecting different blade tip clearances and various blade angle errors.The ratio of the mixed-flow pump efficiency reduction and the blade tip clearance variation(η/δ) varies with the flow rate coefficient revealing a parabolic trend.An empirical equation has been developed for the mixed-flow pump model by parabolic fitting.For the same blade tip clearance variation δ,the mixed-flow pump efficiency reduction η increases rapidly as the flow rate rises.For any given flow rate,the efficiency,the head and the shaft power of the mixed-flow pump all decrease with the increase of the blade tip clearance.Among them,the efficiency reduction η varies approximately linearly with the blade tip clearance variation δ.When the angle of an individual blade of the mixed-flow pump has a deviation,the performance curves will move and change.These curves have consistent change directions with the performance curves under the condition of all the blades rotated at the same time,but have smaller offset and lower range of variation.When an individual blade angle error changes to ±2°,the optimal efficiency of the mixed-flow pump will have no significant difference.When the individual blade angle error increases to ±4°,the optimal efficiency will decrease by 1%. 展开更多
关键词 mixed-flow pump model test hydraulic performance blade tip clearance blade angle
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Efficacy of Chaihu Jisang decoction on post-infection cough and its effect on cough reflex sensitivity 被引量:2
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作者 Hong Minli Huang Baopei +5 位作者 Hong Chunlin Chen Huinuan Chen Wenxi Liu Chaohui Li Xinjian Li Candong 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2018年第4期610-617,共8页
OBJECTIVE:To investigate the efficacy of Chaihu Ji Sang Decoction(CJSD),(a modification of Xiao Chaihu Tang(Minor Decoction of Bupleurum) was evaluated in patients with post-infection cough(PIC).Its effect on cough re... OBJECTIVE:To investigate the efficacy of Chaihu Ji Sang Decoction(CJSD),(a modification of Xiao Chaihu Tang(Minor Decoction of Bupleurum) was evaluated in patients with post-infection cough(PIC).Its effect on cough reflex sensitivity(CRS) was also described.METHODS:One hundred and eighteen patients with PIC were enrolled and randomly divided into an experimental group and control group(54 patients in each group).The experimental group was given CJSD orally,and the control group was given cetirizine hydrochloride for 7 d.Cough symptom scores and TCM symptom scores were compared before and after treatment.Efficacy,cough onset time,recurrence,and adverse drug reactions were additionally evaluated.Finally,CRS was evaluated before and after treatment of PIC patients in the experimental group.RESULTS:Fifty-two patients in the experimental group and fifty control patients completed the study.Cough symptom scores and the TCM symptom scores of the two groups were significantly improved after treatment,however cough symptoms in the experimental group 1(0,2) were significantly lower than the control group 2(1,2) after treatment(P < 0.05).Similarly,TCM symptom scores 4(0,7) in the experimental group were significantly lower than the control group 6(3,12)(P < 0.01).Overall,the effective rate of the experimental treatment(84.60%) was significantly higher than that of the control treatment(68.00%)(P < 0.01).The onset time of efficacy of the experimental treatment was one day faster than the control treatment [2(2,3) d vs 3(2,3) d,P < 0.01].The relapse rate in the experimental group(9.09%) was lower than that of the control group(29.41%)(P < 0.05).39 PIC patients in the experimental group completed a capsaicin cough challenge test before treatment.The lgC2 and lg C5 of the experimental group prior to treatment was 1.19(0.59,1.49) and 1.80(1.49,2.10),respectively.The lgC2,lg C5 of the healthy control group was 1.49(0.89,2.40) and 2.70(2.40,3.00),respectively.The differences in lgC2 and lg C5 between experimental group and healthy groups were significant at this time point(both P < 0.01).After treatment,34 patients in the experimental group received re-examination.lg C5 increased from 1.80(1.49,2.10) to 2.10(1.49,3.00).CRS after treatment/re-examination was significantly lower than those of baseline in the experimental group(P < 0.05).CONCLUSION:CJSD could effectively improve the clinical symptoms of PIC patients,with demonstrable low recurrence and safety.CJSD also significantly decreased the CRS in patients with PIC. 展开更多
关键词 Post-infection cough Chaihu Jisang decoction EFFICACY Cough reflex sensitivity Capsaicin cough challenge test
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Effect of Vane Opening on Aerodynamic Performance of the Ram-rotor Test System 被引量:1
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作者 HAN Ji-ang GUAN Jian +1 位作者 ZHONG Jingjun YUAN Chenguang 《Journal of Thermal Science》 SCIE EI CAS CSCD 2016年第3期207-215,共9页
In order to research the influence of adjustable vane on the aerodynamic performance of the ram-rotor test system, FLUENT soft-ware has been adopted to simulate the flow passage of the ram-rotor test system numericall... In order to research the influence of adjustable vane on the aerodynamic performance of the ram-rotor test system, FLUENT soft-ware has been adopted to simulate the flow passage of the ram-rotor test system numerically. The vane opening is controlled by changing the stagger angle of the vane blades. Results show that flow uniformity of vane outlet is influenced by the vane openings, which has an impact on the aerodynamic loss to some extent. Total pressure ratio, adiabatic efficiency and mass flow rate can be regulated by different openings of the vane. Compared with -8° vane opening, top efficiency of the ram-rotor increases by about 13.8% at +6° opening. And total pressure ratio drops by 5.87%. The rising opening increases the relative Mach number at inlet of the ram-rotor and weakens the intensity of the tip clearance leakage, which comes to a decreasing aerodynamic loss. 展开更多
关键词 adjustable vane RAM-ROTOR test system aerodynamic performance numerical simulation
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Numerical and Experimental Study on Aerodynamic Performance of Small Axial Flow Fan with Splitter Blades 被引量:5
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作者 Zhu Lifu Jin Yingzi +3 位作者 Li Yi Jin Yuzhen Wang Yanping Zhang Li 《Journal of Thermal Science》 SCIE EI CAS CSCD 2013年第4期333-339,共7页
To improve the aerodynamic performance of small axial flow fan, in this paper the design of a small axial flow fan with splitter blades is studied. The RNG k-e turbulence model and SIMPLE algorithm were applied to the... To improve the aerodynamic performance of small axial flow fan, in this paper the design of a small axial flow fan with splitter blades is studied. The RNG k-e turbulence model and SIMPLE algorithm were applied to the steady simulation calculation of the flow field, and its result was used as the initial field of the large eddy simulation to calculate the unsteady pressure field. The FW-H noise model was adopted to predict aerodynamic noise in the six monitoring points. Fast Fourier transform algorithm was applied to process the pressure signal. Experiment of noise testing was done to further investigate the aerodynamic noise of fans. And then the results obtained from the numerical simulation and experiment were described and analyzed. The results show that the static characteristics of small axial fan with splitter blades are similar with the prototype fan, and the static characteristics are improved within a certain range of flux. The power spectral density at the six monitoring points of small axial flow fan with splitter blades have decreased to some extent. The experimental results show sound pressure level of new fan has reduced in most frequency bands by comparing with prototype fan. The research results will provide a proof for parameter optimization and noise prediction of small axial flow fans with high performance. 展开更多
关键词 small axial flow fan splitter blades noise FREQUENCY
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