检索结果-南通市图书馆

Zoological Systematics 2024年第2期49卷 175-180页

作者： Shuyan Ban Ting Li Yong Huang College of Life Sciences Liaocheng UniversityLiaocheng 252059ShandongChina

In order to investigate the biodiversity of free-living nematodes along the coast of the Yellow Sea,sediment samples were collected in a number of intertidal sites in recent *** this area,the mean abundance of free-living nematodes is 1663±502 ind 10 cm^(-2),and more than 200 species have been found(Zhai et al.,2020;Hao et al.,2021,2022;Chu et al.,2023).Among them,species from the genera,Daptonema,Thalassomonhystera,Parodontophora and Bathylaimus,are the most common,while the species,Daptonema parabreviseta Huang&Sun,Parodontophora deltensis Zhang,Bathylaimus huanghaiensis Huang&Zhang and Thalassomonhystera siamensis Kito&Aryuthaka are in ***,a species belongs to the genus Ethmolaimus is identified as new to science,namely *** *** is also the first time for the genus reported in the Chinese sea area.

关键词： sp.nov biodiversity new

The Isomeric Structures of H_2GeLiF, the Prototype Germylenoid

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1999年第6期10卷 511-514页

作者： Hua Yu QIU Wan Yong MA Guan Bin LI Cong Hao DENG (Department of Chemical Engineering. shandong institute of light industry. Jinan 250100 institute of Theoretical Chemistry. shandong University, Jinan 250100) shandong inst light ind Dept Chem Engn Jinan 250100 Peoples R China shandong Univ Inst Theoret Chem Jinan 250100 Peoples R China

The structures of four isomeric forms of the model germylenoid, H2GeLiF. have been examined by ah initio MO theory. The most stable structure is suggested to be the p-complex *** other three species. three-membered ring 2, δ-complex 3 and tetrahedron 4. are also local minima on the potential energy surface. but are higher in energy.

关键词： Germylenoid p-complex ab initio

Sensitized Luminescence of Rare Earths

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 1996年第1期12卷 10-15页

作者： SI Zhi-kun HU Jing-tian JIANG Wei and ZHU Gui-yun(Department of Chemistry, shandong University, Jinan, 250100)LI Shu-hua(Department of Basic Courses, shandong institute of light industry, jinan, 250100) shandong UNIV DEPT CHEMJINAN 250100PEOPLES R CHINA shandong inst light ind DEPT BASIC COURSESJINAN 250100PEOPLES R CHINA

The enhancement effect on the fluorescence intensities of an Eu3+ (or/and Sm3+ )-thenoyltrifluoroacetone (TTA )-dibenzo-18-crown-6 (18-C-6 ) system and Eu 3+ (or /and Sm3+ ) -benzoyltrifluoroacetone (BTA )-cetyltrimethylammonium bromide (CTMAB) system by dysprosium has been studied. In the presence of enhancing ions, the fluorescence intensities of the above systems were enhanced by a factor of about 40-150, respectively. The above systems were used for the determination of europlum or/and samarium in rare earths oxides and gave satisfactory results.

关键词： Sensitized luminescence Rare earths Fluorescence

Photoinduced Electron Transfer Reaction between Poly-guanylic Acid(5') with Anthraquinone-2-sulfonate

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2000年第6期11卷 527-530页

作者： Jian Hua MA Hua SHAO Si De YAO Nian Yun LIN(Department of Chemistry Engineering and Technology, College of light industry of shandong, Jinan 250100)(Laboratory of Radiation Chemistry Shanghai institute of Nuclear Research, Chinese Academy of Science Coll light ind shandong Dept Chem Engn & Technol Jinan 250100 Peoples R China Chinese Acad Sci Shanghai Inst Nucl Res Lab Radiat Chem Shanghai 201800 Peoples R China

The electron transfer reaction between triplet anthraquinone-2-sulfonate with poly-guanylic acid (5) (poly[G]) in acetonitrile-H2O has been investigated by 248 nm laser flash photolysis. The transient absorption spectra of radical cation of poly[G] and radical anion of anthraqunione-2-sulfonate (AQS) arising from electron transfer reaction has been observed simultaneously for the first time. The formation processes of radical cation of poly[G] and radical anion of anthraquinone-2-sulfonate as well as the decay processes of triplet anthraquinone-2-sulfonate have also been observed, the apparent rate constants for the formation and decay of transient species have been determined. The free energy changes in the process of the electron transfer was also calculated.

关键词： Electron transfer reaction poly[G] anthraquinone-2-sulfonate

Distribution and abundance of krill in various areas of the Southern Ocean: dataset compilation based on samples collected in CHINARE during 2009–2019

在线全文

学校读者我要写书评

暂无评论

Advances in Polar Science 2024年

作者： FANG Xiaoyue HU Shugang WANG Yanqing ZHANG Zishang TAO Zhencheng YANG Guang College of Safety and Environmental Engineering Shandong University of Science and Technology Key Laboratory of Marine Ecology and Environmental Sciences Institute of Oceanology Chinese Academy of Sciences Engineering Technology Department Institute of Oceanology Chinese Academy of Sciences Qingdao University of Science and Technology Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and Technology University of Chinese Academy of Sciences Center for Ocean Mega-Science Chinese Academy of Sciences

This study investigates the composition, abundance, and basic biological parameters of krill in Prydz Bay, the Antarctic Peninsula and the Amundsen Sea by analyzing samples and environmental data from the Chinese National Antarctic Research Expeditions conducted between 2009/2010 and 2019/2020. The predominant krill species observed were Euphausia superba, Euphausia crystallorophias, and Thysanoessa macrura. T. macrura, although the most widespread, exhibited the lowest mean abundance(9.96 ind·(1000 m–3)) and biomass(0.31 g·(1000 m–3)), predominantly found in low-latitude regions of the Amundsen Sea while E. crystallorophias was most concentrated in polynyas of Prydz Bay. E. superba, with an average abundance of 34.05 ind·(1000 m–3)and biomass of 11.80 g·(1000 m–3), was mainly distributed in the Antarctic Peninsula and Prydz Bay. This study also identified regional variations in mean body length and frequency distributions of krill. The relationship between krill body length and wet weight followed a power-law pattern. Regional differences were observed in the relationship between krill abundance, biomass, and environmental factors with varying correlations. In the Amundsen Sea, no significant correlation was found between krill abundance and environmental factors. Notably, E. crystallorophias in Prydz Bay demonstrated a significant positive correlation with chlorophyll-a concentration,while T. macrura abundance and biomass in the Antarctic Peninsula exhibited a significant negative correlation with ice-free days. The findings contribute valuable regional data on krill distribution, abundance, and biomass in the Southern Ocean, serving as foundational information for the conservation of the Southern Ocean ecosystem and Antarctic krill fishery management on a circumpolar scale.

关键词：

The Robust Iterative Learning Control of Networked Control Systems with Varying References 25th

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

The Robust Iterative Learning Control of Networked Control S...

Leader-follower Formation Control Based on Logic Control Networks Approach 25th

第25届中国控制与决策会议

作者： Lun Zhai Guohui Tian Fengyu Zhou Yan Li Service Robots Laboratory of shandong Universiy School of Control Science and Engineering Shandong University

ISBN: (纸本)9781467355322

In this paper, the iterative learning control （ILC） is applied to the networked control system （NCS） with iterative varying references and time-delayed states. A robust PD type ILC learning law is discussed including both feedback and feedforward terms. And a P type reference updating law is applied to improve the convergence speed. The convergence conditions are derived in both frequency and time domains. The learning gains in the updating law guarantee the convergence of the control strategy, and can be adjusted to improve the convergence speed to a large extent. A number of simulation results are provided to validate the concepts and the tuning rules are summarized as well.

关键词： Iterative learning control Networked control system Convergence Robustness Iterative varying references.

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Leader-follower Formation Control Based on Logic Control Net...

Effects of sleeve gastrectomy with jejuno-jejunal or jejuno-ileal loop on glycolipid metabolism in diabetic rats

第25届中国控制与决策会议

作者： Lequn Zhang Jun-e Feng Hongli Lv School of Mathematics Shandong University School of Information and Electrical Engineering Shandong Jianzhu University

ISBN: (纸本)9781467355339

The formation control （FC） problem is investigated via mix-valued logic approach. First, a trajectory tracking algorithm of mix-valued logic control networks （MLCN） is proposed. A new formulation of FC problems is established and a feedback control is designed to solve FC problems. The mathematical description of partial-formation control （PFC） problems is then designed as a structure of logical networks. An interesting practical example of PFC is also presented and discussed in detail.

关键词： leader-follower formation control mix-valued logic control networks semi-tensor product

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2016年第32期22卷 7332-7341页

作者： Ming-Wei Zhong Shao-Zhuang Liu Guang-Yong Zhang Xiang Zhang San-Yuan Hu Department of General Surgery Qilu Hospital of Shandong University

AIM To explore the effect of sleeve gastrectomy(SG) with jejuno-jejunal or jejuno-ileal loop on glycolipid metabolism in diabetic *** Diabetic rats, which were induced by high-fat diet(HFD), nicotinamide and low-dose streptozotocin, underwent sham operations, SG, SG with jejuno-ileal loop(SG-JI) and SG with jejuno-jejunal loop(SG-JJ) followed by postoperative HFD. Then, at the time points of baseline and 2, 12 and 24 wk postoperatively, we determined and compared several variables, including the area under the curve for the results of oral glucose tolerance test(AUCOGTT), serum levels of triglyceride, cholesterol and ghrelin in fasting state, homeostasis model assessment of insulin resistance(HOMA-IR), body weight, calorie intake, glucagon-like peptide(GLP)-1 and insulin secretions after glucose gavage at dose of 1 g/*** At 2 wk postoperatively, rats that underwent SG, SGJJ and SG-JI, compared with sham-operated(SHAM)rats, demonstrated lower body weight, calorie intake and ghrelin(P ind

关键词： Sleeve gastrectomy Jejuno-jejunal loop Jejuno-ileal loop Diabetes Glucolipid metabolism

Certificateless Encryption Scheme Secure in Standard Model

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Tsinghua Science and Technology 2009年第4期14卷 452-459页

作者：张国艳王小云 School of Computer Science and Technology Shandong University Key Laboratory of Cryptologic Technology and Information Security of the Ministry of Education Shandong University Center for Advanced Study Tsinghua University

The scheme introduced by Hwang and Liu in 2008 is shown to be insecure against the key re- placement attack. A more practical attack model is introduced, and according to this model, an efficient cer- tificateless encryption scheme is presented which is ind-CCA secure against both Type I and Type II at- tackers without random oracle. This encryption scheme can defend against the malicious key generation center attack, and can reach Girault＇s trusted level 3 as in traditional public key infrastructure-based cryp- tography. This certificateless encryption scheme has a shorter public key than other schemes in the stan- dard model.

关键词： certificateless cryptography malicious key generation center key replacement attack ind-CCA secure

Reasoning calculation of the electrical vehicle recharging service network construction via fitting prediction 25th

在线全文

学校读者我要写书评

暂无评论

Reasoning calculation of the electrical vehicle recharging s...