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上海市标超用能状况及节能潜力分析
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作者 张兴玉 翁文兵 詹杰炜 《节能技术》 CAS 2017年第1期66-70,共5页
为了提高企业能源管理水平,向企业节能管理和节能改造提供科学依据,根据公共建筑能源审计标准,对上海市某连锁标超企业进行能源审计。通过对典型门店能源利用状况和能耗设备运行状况进行现场调研,查找标超建筑存在的能耗问题、核查能耗... 为了提高企业能源管理水平,向企业节能管理和节能改造提供科学依据,根据公共建筑能源审计标准,对上海市某连锁标超企业进行能源审计。通过对典型门店能源利用状况和能耗设备运行状况进行现场调研,查找标超建筑存在的能耗问题、核查能耗数据,发现标超主要的用能类型为电能、天然气、燃油和水,其中,电能的使用量占总能耗的99%以上;企业能耗呈逐年下降趋势,2014年50%门店单位面积能耗处于超标值。经分析,采取相应节能措施后,可节能约18.47%。 展开更多
关键词 标超 能源审计 能耗分析 能耗结构 节能潜力
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超-π-Brauer特征标理论
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作者 钟艳林 郑秉文 《哈尔滨师范大学自然科学学报》 CAS 2014年第5期31-33,共3页
通过使用π-理论和p-Brauer特征标理论来建立超-π-Brauer特征标理论,得到一些结果并给出两个具有非平凡超-π-Brauer特征标理论的π-可分群的例子.
关键词 有限群 Π-可分群 π-Brauer特征
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同位素内标-超高效液相色谱串联质谱法快速测定含乳饮料中三聚氰胺残留 被引量:3
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作者 黄坤 陈冉 +2 位作者 范小龙 刘迪 王会霞 《中国乳品工业》 CAS 北大核心 2019年第8期50-53,共4页
建立一种同位素内标-超高效液相色谱串联质谱快速测定含乳饮料中三聚氰胺残留的分析方法。样品经乙腈提取,Generik DBX固相萃取柱净化,快速离心蒸发系统浓缩,通过MN Nucleoshell Hilic色谱柱梯度洗脱,采用电喷雾离子源(ESI^+)电离,多反... 建立一种同位素内标-超高效液相色谱串联质谱快速测定含乳饮料中三聚氰胺残留的分析方法。样品经乙腈提取,Generik DBX固相萃取柱净化,快速离心蒸发系统浓缩,通过MN Nucleoshell Hilic色谱柱梯度洗脱,采用电喷雾离子源(ESI^+)电离,多反应监测模式(MRM)采集信号,同位素内标法定性和定量。结果表明,三聚氰胺在2~200 ng/mL浓度范围内线性关系良好(r=0.9998),方法定量限为2μg/kg;10、25、50μg/kg三个添加水平时回收率为82.37%~103.15%,相对标准偏差<6%。该方法处理简单、准确度好、灵敏度高,适合含乳饮料中三聚氰胺残留的快速检测。 展开更多
关键词 同位素内-高效液相色谱串联质谱法 含乳饮料 三聚氰胺残留
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p16 promoter hypermethylation:A useful serum marker for early detection of gastric cancer 被引量:50
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作者 Mohammad Reza Abbaszadegan Omeed Moaven +8 位作者 Hamid Reza Sima Kamran Ghafarzadegan Azadeh A'rabi Mohammad Naser Forghani Hamid Reza Raziee Ali Mashhadinejad Mostafa Jafarzadeh Ehsan Esmaili-Shandiz Ezzat Dadkhah 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第13期2055-2060,共6页
AIM: TO determine p15 promoter hypermethylation in gastric tumoral tissue and serum samples, its impact on p16-protein expression, and correlation with clinical and histological features. METHODS: Samples were obtai... AIM: TO determine p15 promoter hypermethylation in gastric tumoral tissue and serum samples, its impact on p16-protein expression, and correlation with clinical and histological features. METHODS: Samples were obtained from 52 histologically confirmed cases of gastric adenocarcinoma. Gastric tissue and serum of 50 age- and sex-matched individuals with normal gastroscopy and biopsy were obtained as control samples. Methylation-specific polymerase chain reaction (MSP) was used to evaluate methylation status of p16 promoter, p16-protein expression was analyzed by immunohistochemical staining on paraffin-embedded sections. RESULTS: Methylation was detected in 44.2% (23/52) of tumoral tissues. 60.9% of them were also methylated in serum, i.e., 26.9% of all patients (14/52). Methylation was not detected in tissue and sera of control samples. p16-protein expression was decreased in 61.5% of cases (32/52), and was significantly associated with promoter hypermethylation (P 〈 0.001). Methylation was significantly more frequent in higher pathological grades (P 〈 0.05). Methylation was not associated with other clinicopathological features and environmental factors including Hpylori infection and smoking. CONCLUSION: p16 promoter hypermethylation is an important event in gastric carcinogenesis. It is the principle mechanism of p16 gene silencing. It is related to malignant tumor behavior. Detection of DNA methylation in serum may be a biomarker for early detection of gastric cancer. 展开更多
关键词 Gastric cancer P16 HYPERMETHYLATION Methylation specific PCR
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Effects of Different Storage Methods on the Fruit Quality and Physiological Changes in Yihong Honey Peach 被引量:1
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作者 CHEN Wei-feng YANG Yu +1 位作者 LONG Li-ping DENG Wen 《Agricultural Science & Technology》 CAS 2022年第4期15-24,共10页
Taking Yihong,the main cultivar of mid-ripening honey peaches(Prunus persica)in Hunan,as material,this study explored the effects of different storage methods on the fruit quality and physiological changes in Yihong h... Taking Yihong,the main cultivar of mid-ripening honey peaches(Prunus persica)in Hunan,as material,this study explored the effects of different storage methods on the fruit quality and physiological changes in Yihong honey peach by the combination of polyethylene film packaging with low-temperature storage.The results showed that the weight loss rate of packaged storage at normal temperature(T1)was significantly lower than that of unpackaged storage at normal temperature(CK),but there was no significant difference in other indicators.In the middle of storage,the respiration rate and ethylene release of packaged storage at 0℃(T3)were extremely significantly lower or significantly lower than those of unpackaged storage at 0℃(T2),packaged storage at 0℃after cold adapting at 8℃for 5 d(T4),and packaged storage in a fluctuating temperature range of 0~3.5℃(T5).After storage,the structure of the middle lamella in the cell wall of T3 was compact and uniform,and the mitochondrial structure was complete,while the cell walls and mitochondria of T4 and T5 were severely deformed and disintegrated.The activities of antioxidant enzymes peroxidase(POD)and superoxide dismutase(SOD)of T3 was significantly higher than those of T4 and T5,and the content of malondialdehyde(MDA)and polyphenol oxidase(PPO)of T3 was also the lowest.Therefore,0°C packaged storage can effectively delay the senescence of Yihong honey peach and prolong its freshness period. 展开更多
关键词 Honey peach(Prunus persica L.Batsch) Yihong Packaging Storage methods Physiological index ULTRASTRUCTURE
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Resected specimen evaluation,anorectal manometry,endoanal ultrasonography and clinical follow-up after STARR procedures 被引量:6
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作者 Gabriele Naldini Guido Cerullo +4 位作者 Claudia Menconi Jacopo Martellucci Simone Orlandi Nicola Romano Mauro Rossi 《World Journal of Gastroenterology》 SCIE CAS CSCD 2011年第19期2411-2416,共6页
AIM:To investigate stapled transanal rectal resection (STARR) procedures as surgical techniques for obstructed defecation syndrome (ODS) by analyzing specimen evaluation,anorectal manometry,endoanal ultrasonography an... AIM:To investigate stapled transanal rectal resection (STARR) procedures as surgical techniques for obstructed defecation syndrome (ODS) by analyzing specimen evaluation,anorectal manometry,endoanal ultrasonography and clinical follow-up.METHODS:From January to December 2007,we have treated 30 patients.Fifteen treated with double PPH-01 staplers and 15 treated using new CCS 30 contour.Resected specimen were measured with respect to average surface and volume.All patients have been evaluated at 24 mo with clinical examination,anorectal manometry and endoanal ultrasonography.RESULTS:Average surface in the CCS 30 group was 54.5 cm2 statistically different when compared to the STARR group (36.92 cm2).The average volume in the CCS 30 group was 29.8 cc,while in the PPH-01 it was23.8 cc and difference was statistically significant.The mean hospital stay in the CCS 30 group was 3.1 d,while in the PPH-01 group the median hospital stay was 3.4 d.As regards the long-term follow-up,an overall satisfactory rate of 83.3% (25/30) was achieved.Endoanal ultrasonography performed 1 year following surgery was considered normal in both of the studied groups.Mean resting pressure was higher than the preoperative value (67.2 mmHg in the STARR group and 65.7 mmHg in the CCS30 group vs 54.7 mmHg and 55.3 mmHg,respectively).Resting and squeezing pressures were lower in those patients not satisfied,but data are not statistically significant.CONCLUSION:The STARR procedure with two PPH-01 is a safe surgical procedure to correct ODS.The new Contour CCS 30 could help to increase the amount of the resected tissue without differences in early complications,post-operative pain and in hospital stay compared to the STARR with two PPH-01 technique. 展开更多
关键词 Stapled transanal rectal resection Contour CCS Obstructed defecation
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MICROTHREAD BASED (MTB) COARSE GRAINED FAULT TOLERANCE SUPERSCALAR PROCESSOR ARCHITECTURE 被引量:3
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作者 Fu Zhongchuan Chen Hongsong Cui Gang 《Journal of Electronics(China)》 2006年第3期461-466,共6页
Fault tolerance in microprocessor systems has become a popular topic of architecture research. Much work has been done at different levels to accomplish reliability against soft errors, and some fault tolerance archit... Fault tolerance in microprocessor systems has become a popular topic of architecture research. Much work has been done at different levels to accomplish reliability against soft errors, and some fault tolerance architectures have been proposed. But little attention is paid to the thread level superscalar fault tolerance. This letter introduces microthread concept into superscalar processor fault tolerance domain, and puts forward a novel fault tolerance architecture, namely, MicroThread Based (MTB) coarse grained transient fault tolerance superscalar processor architecture, then discusses some detailed implementations. 展开更多
关键词 Microthread Basic block Coarse grained fault tolerance Superscalar processor
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A new heuristic algorithm for general integer linear programming problems 被引量:1
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作者 高培旺 《Journal of Chongqing University》 CAS 2006年第3期170-174,共5页
A new heuristic algorithm is proposed for solving general integer linear programming problems. In the algorithm, the objective function hyperplane is used as a cutting plane, and then by introducing a special set of a... A new heuristic algorithm is proposed for solving general integer linear programming problems. In the algorithm, the objective function hyperplane is used as a cutting plane, and then by introducing a special set of assistant sets, an efficient heuristic search for the solution to the integer linear program is carried out in the sets on the objective function hyperplane. A simple numerical example shows that the algorithm is efficient for some problems, and therefore, of practical interest. 展开更多
关键词 integer linear programming objective function hyperplane cutting plane heuristic algorithm
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内衬生产线厚度检测的探讨与分析
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作者 张传照 张占兴 《橡塑技术与装备》 CAS 2015年第23期46-48,共3页
内衬生产线厚度检测实现气密层、过渡层和内衬胶厚度的实时监控,厚度与宽度超差及时准确打标,为生产工艺调整提供依据,下工序能准确识别不合格产品,提供历史数据存储和数据分析,实现生产数据的追溯和管理。
关键词 差打 工艺调整 数据追溯
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RADIONUCLIDES IN NOODLES AND BREAD CONSUMED IN HONG KONG
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作者 余君岳 茅瑞恩 《Nuclear Science and Techniques》 SCIE CAS CSCD 1995年第3期168-171,共4页
Most of the natural occurring radionuclides in both noodles and bread are found to have specific activities below the detectable limit of the high purity germanium (n-type) spectrometer system of the EG&G Ortec C... Most of the natural occurring radionuclides in both noodles and bread are found to have specific activities below the detectable limit of the high purity germanium (n-type) spectrometer system of the EG&G Ortec Company. For dried bread, 40K,137Cs and 60Co are found to be 44.45 ̄84.52, < 0.012  ̄0.052, < 0.018  ̄0.054 Bq/kg;for noodles, to be 29.55 ̄64.54, < 0.01  ̄0.069 and < 9.8× 10-3  ̄ 0.074 Bq/kg,respectively. The weighted committed dose equivalents due to the ingestion of 137Csfrom noodles and bread for a male and female adults have been estimated to be 0.5and 0.6μSv, respectively, being less than the values recommended by ICRP. 展开更多
关键词 High purity germanium spectrometer system NOODLES BREAD Naturalredionuclides 4oK 137Cs 60Co Weighted committed dose equivalent Hong Kong
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Supersymmetry and Solution of Dirac Equation with Vector and Scalar Potentials
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作者 JU Guo-Xing REN Zhong-Zhou 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第2期319-326,共8页
The Dirac equations with vector and scalar potentials of the Coulomb types in two and three dimensions are solved using the supersymmetric quantum mechanics method. For the system of such potentials, the analytical ex... The Dirac equations with vector and scalar potentials of the Coulomb types in two and three dimensions are solved using the supersymmetric quantum mechanics method. For the system of such potentials, the analytical expressions of the matrix dements for both position and momentum operators are obtained. 展开更多
关键词 Dirac equation vector potential scalar potential SUPERSYMMETRY matrix element
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Design of logic process based low-power 512-bit EEPROM for UHF RFID tag chip 被引量:2
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作者 金丽妍 LEE J H KIM Y H 《Journal of Central South University》 SCIE EI CAS 2010年第5期1011-1020,共10页
A 512-bit EEPROM IP was designed by using just logic process based devices.To limit the voltages of the devices within 5.5 V,EEPROM core circuits,control gate(CG) and tunnel gate(TG) driving circuits,DC-DC converters:... A 512-bit EEPROM IP was designed by using just logic process based devices.To limit the voltages of the devices within 5.5 V,EEPROM core circuits,control gate(CG) and tunnel gate(TG) driving circuits,DC-DC converters:positive pumping voltage(VPP=4.75 V) ,negative pumping voltage(VNN=4.75 V) ,and VNNL(=VNN/2) generation circuit were proposed.In addition,switching powers CG high voltage(CG_HV) ,CG low voltage(CG_LV) ,TG high voltage(TG_HV) ,TG low voltage(TG_LV) ,VNNL_CG and VNNL_TG switching circuit were supplied for the CG and TG driving circuit.Furthermore,a sequential pumping scheme and a new ring oscillator with a dual oscillation period were proposed.To reduce a power consumption of EEPROM in the write mode,the reference voltages VREF_VPP for VPP and VREE_VNN for VNN were used by dividing VDD(1.2 V) supply voltage supplied from the analog block in stead of removing the reference voltage generators.A voltage level detector using a capacitive divider as a low-power DC-DC converter design technique was proposed.The result shows that the power dissipation is 0.34μW in the read mode,13.76μW in the program mode,and 13.66μW in the erase mode. 展开更多
关键词 electrically erasable programmable read-only memory (EEPROM) logic process DC-DC converter ring oscillator sequential pumping scheme dual oscillation period radio frequency identification (RFID)
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SURVEILLANCE OF MOVING TARGET BEHIND PARTITIONS USING A UWB-TWDR 被引量:1
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作者 LiYu HuangChunlin SuYi 《Journal of Electronics(China)》 2005年第3期241-247,共7页
This paper firstly analyzes the property of the low frequency electromagnetic wave, which can penetrate many types of non-metallic materials, and the ability of Ultra-Wide Band (UWB) impulse signal which has high rang... This paper firstly analyzes the property of the low frequency electromagnetic wave, which can penetrate many types of non-metallic materials, and the ability of Ultra-Wide Band (UWB) impulse signal which has high range resolution. Then the methods are discussed for conducting surveillance through walls, detecting and locating the moving persons behind the partitions. The schematic diagram of Through-Wall Detecting Radar (TWDR) and the models of moving target are shown and the principle of detecting the moving target is also provided with coherent superimposing technique on a range gate. Finally an algorithm for estimating the location of targets is given. The performance of TWDR is validated by the experiments of penetrating a wood block, a red brick wall and a reinforced concrete wall. 展开更多
关键词 Through-Wall Detecting Radar (TWDR) Range gate Moving target detection Range estimation
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Study on Excess Thermodynamic Parameters and Theoretical Estimation of Ultrasonic Velocity Using Scaled Particle Theory in Binary Liquid Mixtures of 2-Methyl-2-propanol and Nitriles at Different Temperatures 被引量:2
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作者 K. Rajagopal S. Chenthilnath 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2010年第5期804-816,共13页
Density, ρ, ultrasonic speed, u, and viscosity, η, of binary mixtures of 2-methyl-2-propanol (2M2P) with acetonitrile (AN), propionitrile (PN) and butyronitrile (BN) including those of pure liquids are measured over... Density, ρ, ultrasonic speed, u, and viscosity, η, of binary mixtures of 2-methyl-2-propanol (2M2P) with acetonitrile (AN), propionitrile (PN) and butyronitrile (BN) including those of pure liquids are measured over the entire composition range at temperatures 298.15, 303.15 and 308.15 K. From these experimental data, the excess available volume, E a V , excess free volume, E f V , excess isothermal compressibility, E T β , excess thermal expansion coefficient, E α , and excess internal pressure, E i π , are calculated. The variation of these properties with composition and temperature are discussed in terms of molecular interactions between unlike molecules of the mixtures. It is found that the values of E a V , E f V , E T β and E α are positive and those of E i π are negative for all the mixtures at each temperature studied, indicating the presence of weak interactions between 2M2P and AN/PN/BN molecules. The variations of E a V , E f V , E T β , E α and E i π values with composition indicate that the interactions in these mixtures follow the order: AN<PN<BN, i.e., the 2M2P-nitrile interaction decreases with the increase of alkyl chain length in these nitrile molecules. In addition, the theoretical ultrasonic velocity is calculated using the scaled particle theory and compared with the experimental values. 展开更多
关键词 2-methyl-2-propanol homologous nitriles excess properties molecular interactions scaled particle theory
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Effects of water-current speed on hematological,biochemical and immune parameters in juvenile tinfoil barb,Barbonymus schwanenfeldii(Bleeker,1854) 被引量:2
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作者 朱志明 宋波澜 +1 位作者 林小涛 许忠能 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2016年第1期118-124,共7页
This study examines the effect of water-current speed on hematological,biochemical and immune parameters in juvenile tinfoil barb(B arbonymus schwanenfeldii). Blood samples were taken on days 1,23 and 45 from control ... This study examines the effect of water-current speed on hematological,biochemical and immune parameters in juvenile tinfoil barb(B arbonymus schwanenfeldii). Blood samples were taken on days 1,23 and 45 from control fish and from two training groups maintained at current speeds of 0.06 bl/s(body length per second),0.66 bl/s,and 1.92 bl/s,respectively. Significantly increased red-blood-cell counts and hematocrit were observed in the post-training groups on days 23 and 45. Significantly increased hemoglobin concentrations were also observed in the 1.92 bl/s group on days 23 and 45. In contrast,values of mean corpuscular volume were significantly lower in the 1.92 bl/s group than in the other groups on day 45. Nitroblue-tetrazolium-positive cells and lysozyme and superoxidase dismutase activities in the plasma increased significantly with increasing training intensity on days 23 and 45. Antibacterial activities were significantly increased in the trained groups compared with the control group on day 23; significantly elevated alkaline phosphatase activity was observed in the 1.92 bl/s groups on day 45. Therefore,training intensities of 0.66 and 1.92 bl/s enhanced the blood oxygen-carrying capability and plasma immune parameters of juvenile tinfoil barbs. 展开更多
关键词 Barbonymus schwanenfeldii sustained training blood oxygen-carrying capability immuneparameters
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Discussion of the target-missile control scheme with supersonic speed at minimum altitude
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作者 史震 于秀萍 赵万生 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2006年第1期16-19,共4页
An antiship missile with supersonic speed at minimum altitude is an effective weapon to break through a defense line. The former Soviet Union was a leader in this field since it had developed several kinds of antiship... An antiship missile with supersonic speed at minimum altitude is an effective weapon to break through a defense line. The former Soviet Union was a leader in this field since it had developed several kinds of antiship missiles which obtained supersonic speed at minimum altitudes. To counter this kind of missile, many countries have been developing corresponding antimissiles. For the purpose of verifing the antimissile missile′s effectiveness in intercepting antiship missiles, a target-missile is needed. A target-missle is cheaper and can imitate the main characteristics of antiship missiles with supersonic speed at minimum altitude. In this paper, the control scheme of a target missile flying with supersonic speed at minimum altitude is studied. To counter the problem of hedgehopping over the sea, a control scheme utilizing a SINS+altimeter was proposed. In this scheme, both the quick response ability of altitude control and the anti-jamming problem were considered. A simulation experiment shows that when an integrated altitude control system is used, the anti-disturbance ability of the integrated altitude is good and the response speed of altitude control system can be dramatically improved. 展开更多
关键词 SUPERSONIC minimum altitude target missile integrated altitude
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对标比超值得推荐
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作者 包昌火 《商学院》 2004年第2期8-8,共1页
关键词 杆管理 竞争定 企业管理 格兰仕公司 青岛啤酒公司
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Discussion on the Relationship between “Anti-great Earthquakes” and Ground Motion with a Low Probability of Exceedance
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作者 Chen Kun Gao Mengtan Li Wansheng 《Earthquake Research in China》 2013年第4期440-446,共7页
In this paper we discuss the differences and relationship between"great earthquakes",rare ground motion,and very rare ground motion.Taking the Beichuan-Yingxiu potential seismic source zone in Longmenshan se... In this paper we discuss the differences and relationship between"great earthquakes",rare ground motion,and very rare ground motion.Taking the Beichuan-Yingxiu potential seismic source zone in Longmenshan seismic belt as an example,we revealed the relationship between the effects of"great earthquakes"and rare ground and very rare ground motion.After pointing out scientific and technical problems in the current seismic fortification system,we suggest that very rare ground motion should be considered if we want to deduce the potential hazard of great earthquakes in the future. 展开更多
关键词 Great earthquake Rare ground motion Very rare ground motion Probability of exceedance
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Microscopic Superconductivity and Room Temperature Electronics of High-T_c Cuprates
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作者 LIU Fu-Su CHEN Wan-Fang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第11期1237-1240,共4页
Abstract This paper points out that the Landau criterion for macroscopic superfluidity of He H is only a criterion for microscopic superfluidity of ^4He, extends the Landau criterion to microscopic superconductivity i... Abstract This paper points out that the Landau criterion for macroscopic superfluidity of He H is only a criterion for microscopic superfluidity of ^4He, extends the Landau criterion to microscopic superconductivity in fermions (electron and hole) system and system with Cooper pairs without long-range phase coherence. This paper gives another three non-superconductive systems that are of microscopic superconductivity. This paper demonstrates that one application of microscopic superconductivity is to establish room temperature electronics of the high-To cuprates. 展开更多
关键词 SUPERCONDUCTIVITY Landau criterion long-range phase coherence
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A novel wireless personal area network technology: ultra wide band technology
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作者 GAO Wei-hua GUO Li-li LIANG Zhi-guo 《Journal of Marine Science and Application》 2006年第3期63-69,共7页
Ultra Wideband (UWB) technology is promising for wireless personal area network (WPAN) applications due to its high data rate, low power requirement and short-range characteristics. Instead of exploring new unused fre... Ultra Wideband (UWB) technology is promising for wireless personal area network (WPAN) applications due to its high data rate, low power requirement and short-range characteristics. Instead of exploring new unused frequency band, the UWB communication follows the overlay principle, i.e., sharing the spectrum with existing systems and devices. This novel radio technology has been recently approved by the regulatory authorities in the United States and Canada, and is being considered for approval in Europe and Asia. In this paper, an overview of the UWB radio technology from the technical, economical, and regulatory perspectives is provided. Firstly, the definition of UWB by the Federal Communications Commission (FCC) is introduced, followed by a brief introduction to the history. The current status of the standardization process resulting from the FCC’s recent decision to permit unlicensed operation in the [3.1 - 10.6] GHz band is discussed. Then, the reasons of considering UWB as a future solution for WLAN/WPAN applications are studied. In particular, the unique properties of UWB and its difference from other wireless technology alternatives are studied. Then, the benefits and challenges related to the commercial deployment of UWB for future applications are discussed. Finally, the research problems and challenges posed by the UWB technology are focused. 展开更多
关键词 UWB WLAN high data rate ROBUSTNESS STANDARD multiple access
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