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THE BEIJING ELECTRON POSITRON COLLIDER

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Chinese Science Bulletin 1989年第7期34卷 529-532页

作者： HOU, rc Institute of High Energy Physics Academia SinicaBeijing

The 'origin' of the structure of matter has been studied for a long time. Since the J/φ particle was discovered in 1974, people have carried out extensive studies on the charm physics. This important discovery has op... 详细信息

关键词： BES THE BEIJING ELECTRON POSITRON COLLIDER BEPC

Computation of Design Load and Motion for Floating Structures Navigating in Waves

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China Ocean Engineering 1999年第1期14卷 93-100页

作者： Wang, YY Zhu, rc Miao, J Dalian Univ Technol Sch Naval Architecture & Marine Engn Dalian 116024 Peoples R China

Analytical and numerical investigation is made of the source potential for-floating structure with forward speed in waves. A particular form is selected for numerical applications, where the double integral of the Green function is transformed into the single one and the oscillation characteristics for integrands in the specific computation domain are treated numerically. A comparison of calculated examples with published data is given and it shows that the numerical simulation is satisfactory and the accuracy is adequate to engineering application.

关键词： floating structure Green function ship motion source distribution

Constructing orthogonal fractional factorial designs with the same confounding structure

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Chinese Science Bulletin 1997年第7期42卷 545-548页

作者： Wang, ZJ Zhang, rc Department of Mathematics Nankai University Tianjin China

ORTHOGONAL arrays (OAs) have important applications to many fields. A lot of OAs and their construction methods have been introduced in the experimental design literature (for example, Box, Hunter and Dey). These OAs ... 详细信息

关键词： cosei defining contrast factorial design infeasible factor-level combination orthogonal array.

Prediction of Extreme Sea-State Encountered by Oceangoing Vessels

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China Ocean Engineering 1998年第4期13卷 483-487页

作者： Wang, YY Qian, K Zhu, rc Dalian Univ Technol Sch Naval Architecture & Marine Engn Dalian 116024 Peoples R China

In order to determine the extreme sea-state encountered by oceangoing vessels, a method for the prediction of wave parameters based on the data of long-term distribution sample is developed by use of the fitting approach with the Weibull probability functions and the power functions. As an example a special calculation result is given including the analysis of wave parameters for the data of the North Atlantic Basin and the computation of motion and load encountered by two container ships CSLR and CSBV in different loading conditions. All computation results are satisfactory compared with corresponding design results.

关键词： probability distribution statistical analysis ship motion wave load

Anthelmintic activity of Securidaca longepedunculata(Family:Polygalaceae)root extract in mice,in vitro and in vivo

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Asian Pacific Journal of Tropical Medicine 2013年第11期6卷 841-846页

作者： Adiele rc Fakae BB Isuzu IU Department of Anatomy and Cell Biology.Division of Biomedical Sciences College of MedicineUniversity of SaskatchewanSaskatoon.SK.S7N5E Cameco MS Neuroscience Research Center Saskatoon City HospitalSaskatoonSKS7K OM7 Department of Veterinary Parasitology and Entomology Faculty of Veterinary MedicineUniversity of NigeriaNsukka Vice Chancellor's Office River State university of Science and TechnologyPort Harcourt Department of Veterinary Physiology and Pharmacology Faculty of Veterinary MedicineUniversity of NigeriaNsukka Deputy Vice Chancellor's Office.University of Nigeria Nsukka

Objective:To elucidate the pharmacological bases of oral administration of Securidaca longepedunculata(***) root extract as an anthelmintic in folkloric medicine. Methods:Albino mice were infected with infective third(L3) larval stage of Heligmosomoides polygyrus(***) by esophageal *** establishment of the adult worms in the intestine,the mice were treated with 0-2 000 mg/kg body weight(bw) of methanolic root extract of *** and 100 mg/kg bw of pyrantel embonate,the reference drug in vivo. Bioactivity and larvicidal effects of the extract were tested by exposing brine shrimps(Artemia salina) to 0.00-1.00 mg/mL and the L3 stage of Heligmosomoides contortus(***) and *** to 0.00-2.50 mg/mL of the extract in ***:The percentage yield of the extract was 7.13%w/w dry *** brine shrimps toxicity bioassay resulted in an LC_(50) of 74.18 μ g/*** extract had a significant,dose-dependent larvicidal effect on the L3 stage of *** and *** with the terminal effect of 75%and 70%at the highest exposure concentrations,*** extract however,did not affect the number of worm eggs per gram(epg) of fecal materials(P<0.05) and total worm burden(twb) of adult *** in infected *** with pyrantel embonate significant reduced both the fecal egg count and twb to 0 compared to the untreated control(P<0.05).Conclusions:These results indicate that *** root extract contains potent bioactive compounds and has larvicidal effect on L3 stage of *** and ***,substantiating its use as anthelmintic in alternative medicine.

关键词： Anthelmintic Securidaca longepedunculata Haemonchus contortus Heligmosomoides polygyrus Brine shrimps Larvicidal Fecal egg count

Molecular cloning,in vitro expression and enzyme activity analysis of violaxan-thin de-epoxidase from Oryza sativa L.

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Chinese Science Bulletin 2002年第11期47卷 915-917页

作者： Lin, rc Li, LB Kuang, TY Chinese Acad Sci Photosynth Res Ctr Inst Bot Beijing 100093 Peoples R China

The violaxanthin de-epoxidase gene was cloned from rice (Oryza sativa subsp. japonica). The full length of the cDNA is 1887 bp, encoding a 446-amino acids protein with the transit peptide of 98 amino acids. The bacterial expression vector pET-Rvde was constructed and the expression quantity of the exogenous protein increased with the induction time by 0.4 mmol/L IPTG. Its molecular weight was similar with that of the native VDE. Western blotting indicated that the expressed protein has immu-nological reaction with the VDE polyclonal antibody. The absorbance spectrum together with xanthophyll pigments quantification by HPLC demonstrated that the expressed VDE has its enzyme activity, which can de-epoxidate violaxanthin into antheraxanthin and zeaxanthin in vitro.

关键词： Oryza saliva L. violaxanthin de-epoxidase clone ex-pression enzyme activity.

Wound healing effect of methanolic leaf extract of Napoleona vogelii(Family:Lecythidaceae) in rats

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Asian Pacific Journal of Tropical Medicine 2014年第8期7卷 620-624页

作者： Adiele LC Adiele rc Enye JC Department of Pharmacology and Toxicology Faculty of PharmacyMadonna UniversityEleleRiver StateNigeria Department of Pharmacy Federal Medical CenterOwerriImo StateNigeria Department of Anatomy and Cell Biology Division of Biomedical SciencesCollege of MedicineUniversity of SaskatchewanSaskatoonSKS7N 5E5Canada Cameco MS Neuroscience Research Center Saskatoon City HospitalSaskatoonSKS7K 0M7Canada

Objective:To investigate the wound healing properly of Napoleona vogelii leaf extract in folkloric ***:Roth sexes of adult albino rats(n=25) were used in this study and another group(n=30) were subjected to acute toxicity test(LD_(50)) of the plant *** the LD_(50),three randomized groups of 5 rats were first treated with 10,100,1 000 mg/kg body weight(bw),*** w as followed by a second treatment of 1500,3000,and 5 000 mg/kg bw of the leaf extract with continual monitoring of the animals for mortality or *** wounds(1.3cm) were created on the skin of five groups of 5 rals using surgical blade under *** first group was topically treated with petroleum jelly alone,group 2 was topically applied 400 mg/mL w/v of the reference drug,Neobaein,while group 3-5 were topically treated with 5-50 mg/mL w/v of the plant extract,***:The percentage yield of the extract was 49.80%w/w dry *** phytochemical analysis revealed several bioactive constituents including glycosides,tannins,alkaloids,***,steroids,proteins,and *** LD_(50) was beyond our experimental limit and was not *** concentrations(5,20,and 50mg/mL w/v) of the extract had significant(ANOVA,P<0.05) healing effect on the incision wounds giving rise to 125%-140% while treatmentawith Neobacin resulted in 150% healing effect on the third treatment regimen compared to the control(100%).Conclusions:These data indicate that Napoleona vogelii leaf extract contains potent bioactive compounds containing wound healing activity,substantiating its use as a wound healer in folkloric medicine.

关键词： Wound healing Napoleona vogelii Petroleum jelly Neobacin Folkloric medicine

Novel　Type　CO_2　Methanation　Catalysts　over　Ni／Sepiolite　and　Ru／Sepiolite　System

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Chinese Chemical Letters 1996年第10期7卷 956-959页

作者： Deng, GC Xu, L Mu, rc Chen, RT Lu, W NANKAI UNIV DEPT CHEMTIANJIN 300071PEOPLES R CHINA TIANJIN ENVIRONM PROTECT BUR TIANJIN 300191PEOPLES R CHINA

A Novel type single-component catalyst in which small amounts of nickel of ruthenium supported on sepiolite nas found to be a very efficient methanation catalyst for carbon dioxide at high space velocity.

关键词： Ru and Type over Methanation Novel Sepiolite System CO2 Catalysts 二氧化碳 Ni

Evaluation of angiosuppressive activity of Pleurotus florida on developing chick embryo using chorioallantoic membrane assay

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Studies in Fungi 2021年第1期6卷 334-341页

作者： Zacarias rc Kalaw SP De Leon AM Department of Biological Sciences College of ScienceCentral Luzon State UniversityScience City of MuñozNueva EcijaPhilippines Center for Tropical Mushroom Research and Development College of ScienceCentral Luzon State UniversityScience City of MuñozNueva EcijaPhilippines

Angiogenesis is the proliferation of new blood vessels that enable the normal embryonic development and may also induce growth of numerous pathologies like tumor growth and cancer *** assays were used for both pro and anti-angiogenic *** study evaluated the angiosuppressive activity of Pleurotus florida on the developing chick embryo using chorioallantoic membrane(CAM)assay and used destructive sampling into four different treatment concentrations and a *** result revealed a decrease in the number of blood vessels branch points formed after 24,48,and 72 hours at higher treatment concentrations(0.50%and 1%).Statistical analysis showed that 24 hours and 48 hours of exposure to various concentrations have no significant ***,after 72 hours of exposure,the mean blood vessel branch points formed showed a significant difference among the treatment means between the highest concentration of ***(1%)and the control treatment(sterile water).In terms of the percentage of angiosuppressive activity of *** with the greatest angiogenic effect,which was the 1%*** treatment concentration possesses 35.69%and 36.85%angiosuppressive rate after 48 and 72 hours of exposure ***,this study showed that *** lyophilized hot water extract exhibits angiosuppressive activity on the developing chick embryo using chorioallantoic membrane assay and is concentration and time exposure dependent.

关键词： angiogenesis blood vessels destructive sampling embryonic development pathologies