检索结果-南通市图书馆

Potential of Fish Wastes as Feedstock for Biodiesel

Advances in Bioscience and Biotechnology 2019年第5期10卷 109-118页

作者： Sujjat Al Azad lai yee wuen Mohammad Tamrin Bin Mohamad Lal Borneo Marine Research Institute University Malaysia Sabah Kota KInabalu Malaysia

Fish wastes are the discarded parts include the internal organs, viscera, bones, trimmings, tails, fins and skin of fishes. These discarded portions while disposing of cause major environmental damage. Usually, the discarded parts of fishes are ground into fishmeal for livestock and aquaculture feed. This study was undertaken to explore biodiesel production based on the fatty acids composition. The fish waste sample was collected from Kota Kinabalu, Sabah fish market. The sample was drained for excess water and oven-dried at 55°C - 60°C for complete dryness. Crude oils were extracted in petroleum ether in Soxhlet extraction method. Methylation of the extracted crude fish oil was carried out to yield fatty acid methyl esters (FAME). The FAME was analyzed by GCMS system and the reference to NIST library was used to identify the fatty acids present in the FAME. A total of 21 fatty acids were identified that composed of 53.53% saturated fatty acids (SFA), 22.1% monounsaturated fatty acid (MUFA) and 24.37% polyunsaturated fatty acids (PUFA). The important fatty acids [myristic acid (C14:0), palmitic acid (C16:0), palmitoleic acid (C16:1), oleic acid (C18:1), linoleic acid (C18:2), linolenic acid (C18:3), docosapentaenoic acid (C22:5) and docosahexaenoic acid (C22:6)] found in fish oil indicated the potentiality of biodiesel production if fish waste was stocked. The highest percentage of SFA causes higher viscosity, cetane number and density and hence these properties of biodiesel produced from the fish waste are expected to be high. Therefore, the fish waste has high potential of fatty acid in FAME to produce biodiesel through transesterification process.

关键词： Fish Waste Lipids Fatty Acid Fatty Acid Methyl Ester Biodiesel

来源：

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

Intercellular and inter-organ crosstalk in browning of white adipose tissue:molecular mechanism and therapeutic complications

引用

Journal of Molecular Cell Biology 2021年第7期13卷 466-479页

作者： lai yee Cheong Aimin Xu The State Key Laboratory of Pharmaceutical Biotechnology The University of Hong KongHong KongChina Department of Medicine The University of Hong KongHong KongChina Department of Pharmacology and Pharmacy The University of Hong KongHong KongChina

Adipose tissue(AT)is highly plastic and heterogeneous in response to environmental and nutritional *** development of heat-dissipating beige adipocytes in white AT(WAT)through a process known as browning(or beiging)has garnered much attention as a promising therapeutic strategy for obesity and its related metabolic *** is due to its inducibility in response to thermogenic stimulation and its association with improved metabolic *** consists of adipocytes,nerves,vascular endothelial cells,various types of immune cells,adipocyte progenitor cells,and *** cells contribute to the formation of beige adipocytes through the release of protein factors that significantly influence browning *** addition,inter-organ crosstalk is also important for beige adipocyte ***,we summarize recent findings on fat depot-specific differences,secretory factors participating in intercellular and inter-organ communications that regulate the recruitment of thermogenic beige adipocytes,as well as challenges in targeting beige adipocytes as a potential anti-obese therapy.

关键词： adipose tissue browning circulating factors energy homeostasis adipose biology obesity

来源：

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

A novel unsupervised approach for multilevel image clustering from unordered image collection

引用

Frontiers of Computer Science 2013年第1期7卷 69-82页

作者： lai KANG Lingda WU yee-Hong YANG College of Information System and Management National University of Defense Technology Changsha 410073 China The Key Lab the Academy of Equipment Command & Technology Beijing 101400 China Department of Computing Science University of Alberta Edmonton Alberta T6G 2E8 Canada

A novel unsupervised approach to automatically constructing multilevel image clusters from unordered im- ages is proposed in this paper. The whole input image col- lection is represented as an imaging sample space （ISS） con- sisting of globally indexed image features extracted by a new efficient multi^view image feature matching method. By mak- ing an analogy between image capturing and observation of ISS, each image is represented as a binary sequence, in which each bit indicates the visibility of a corresponding feature. Based on information theory-inspired image popularity and dissimilarity measures, we show that the image content and distance can be quantitatively described, guided by which an input image collection is organized into multilevel clusters automatically. The effectiveness and the efficiency of the pro- posed approach are demonstrated using three real image col- lections and promising results were obtained from both qual- itative and quantitative evaluation.

关键词： multilevel image clustering imaging sample space (ISS) unordered image collection

来源：

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

Modifications of ALPPS–from complex to more complex or from complex to less complex operations

引用

Hepatobiliary & Pancreatic Diseases International 2017年第4期16卷 346-352页

作者： Wan yee Lau Eric CH lai Faculty of Medicine The Chinese University of Hong KongShatinNew TerritoriesHong Kong SARChina Department of Surgery Pamela Youde Nethersole Eastern HospitalHong Kong SARChina

BACKGROUND: Associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) has recently been developed to induce rapid liver hypertrophy to reduce the chance of post-hepatectomy liver failure in patients with borderline or insufficient future liver remnant. ALPPS is still in an early developmental stage and its techniques have not been standardized. This study aimed to review the technical modifications of the conventional ALPPS procedure. DATA SOURCES: Studies were identified by searching MEDLINE and PubMed for articles published from January 2007 to December 2016 using the keywords 'associating liver partition and portal vein ligation for staged hepatectomy' and 'ALPPS'. Additional articles were identified by a manual search of references from key articles. RESULTS: There have been a lot of modifications of the conventional ALPPS. These are classified as: (1) modifications aiming to improve surgical results; (2) modifications aiming to expand surgical indications; (3) salvage ALPPS; (4) ALPPS using the minimally invasive approach. Some of these modifications have made the conventional ALPPS procedure to become even more complex, although there have also been other attempts to make the procedure less complex. The results of most of these modifications have been reported in small case series or case reports. We need better well-designed studies to establish the true roles of these modifications. However, it is interesting to see how this conventional ALPPS procedure has evolved since its introduction. CONCLUSIONS: There is a trend for the use of minimally invasive procedure in the phase 1 or 2 of the conventional ALPPS procedure. Some of these modifications have expanded the use of ALPPS in patients who have been considered to have unresectable liver tumors. The long-term oncological outcomes of these modifications are still unknown.

关键词： associating liver partition and portal vein ligation for stage hepatectomy hepatocellular carcinoma hepatectomy liver metastasis portal vein embolization

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Asymmetric hydrogenation of aromatic ketones using new chiral-bridged diphosphine/diamine-Ru(Ⅱ) complexes

引用

Chinese Chemical Letters 2010年第12期21卷 1403-1406页

作者： Yu Ming Cui lai lai Wang Fuk yee Kwong Wei Sun State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China Open Laboratory of Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis and Department of Applied Biology and Chemical technology The Hong Kong Polytechnic University Hong Kong China Graduate University of Chinese Academy of Sciences Beijing 100039 China

A series of chiral secondary alcohols were easily prepared by means of asymmetric hydrogenation of prochiral aromatic ketones using a new（（Rax）-BuP）/（R,R）-DPEN-Ru（Ⅱ） complex catalyst *** hydrogenation of 2-methylacetophenone in n-butanol （t-BuOK/Ru =45.6/1,S/C = 500,20 *** H2,20℃,48 h） afforded（S）-1-（2＇-methylphenyl）ethanol in 92%ee and〉99% conversion.

关键词： Asymmetric hydrogenation Chiral alcohols Diphosphine ligand Ruthenium complexes Diamine

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Environmental application of three-dimensional graphene materials as adsorbents for dyes and heavy metals: Review on ice-templating method and adsorption mechanisms

引用

Journal of Environmental Sciences 2019年第5期31卷 174-199页

作者： Kar Chiew lai lai yee Lee Billie Yan Zhang Hiew Suchithra Thangalazhy-Gopakumar Suyin Gan Department of Chemical and Environmental Engineering University of Nottingham Malaysia Campus

The remediation of wastewater requires treatment technologies which are robust, efficient,simple to operate and affordable such as adsorption. Lately, three-dimensional(3D)graphene based materials have attracted significant attention as effective adsorbents for wastewater treatment. The intrinsic properties of 3D graphene structure such as large surface area and interconnected porous structure can facilitate the transport of pollutants into the 3D network and provide abundant active sites for trapping the pollutants. For the synthesis of 3D graphene structure, ice-templating is commonly practiced due to its facile steps, cost effectiveness and high scalability potential. This review covers the icetemplating fabrication technique for 3D graphene based materials and their application as adsorbents in eliminating dyes and heavy metals from aqueous media. The assembly mechanisms of the ice-templating fsynthesis are comprehensively discussed. Further discussion on the fundamental principles, critical process parameters and characteristics of ice-templated 3D graphene structures is also included. A thorough review on the mechanisms for batch adsorption of dyes and heavy metals is presented based on the structures and properties of the 3D graphene materials. The review further evaluates the dynamic adsorption in packed columns and the regeneration of 3D graphene based materials.

关键词： Ice-templating 3D graphene based structure Adsorption mechanism Dyes Heavy metals

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Hemodynamics and oxygen transport dynamics during hepatic resection at different central venous pressures in a pig model

引用

Hepatobiliary & Pancreatic Diseases International 2011年第5期10卷 516-520页

作者： Wan-yee Lau Eric CH lai Department of Hepatic and Biliary Surgery First Affiliated Hospital Guangxi Medical University Faculty of Medicine the Chinese University of Hong Kong Shatin New Territories Hongkong SAR China

BACKGROUND: Although low central venous pressure (CVP) has been used to minimize blood loss during hepatectomy the impact of variations of CVP on the rate of blood loss and on the perfusion of end-organs has not been evaluated This animal study aimed to evaluate the hemodynamics and oxygen transport changes during hepatic resection at different CVP levels. METHODS: Forty-eight anesthetized Bama miniature pigs were divided into 8 groups with CVP during hepatic resection controlled at 0 to <1, 1 to <2, 2 to <3, 3 to <4, 4 to <5, 5 to <6, 6 to <7, and 7 to <8 cmH 2 O. Intergroup comparisons were made for hemodynamic parameters, oxygen transport dynamics, and the rate of blood loss. RESULTS: The rate of blood loss and the hepatic venous pressure during hepatic resection were almost linearly related to the CVP. A significant drop in the mean arterial pressure cardiac output, and cardiac index occurred between CVP ≥2 and <2 cmH 2 O. Oxygen delivery (DO 2 ), oxygen consumption (VO 2 ) and oxygen extraction ratio (ERO 2 ) remained relatively constant between CVPs of 2 to <8 cmH 2 O. There was a significant drop in DO 2 when the CVP was <2 cmH 2 O. There was also a significant drop in VO 2 and ExO 2 when the CVP was <1 cmH 2 ***: The optimal CVP for hepatic resection is 2to 3 cmH2O.

关键词： hepatectomy hemorrhage central venous pressure tissue oxygenation hemodynamics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Associating liver partition and portal vein ligation for staged hepatectomy： the current role and development

引用

Hepatobiliary & Pancreatic Diseases International 2017年第1期16卷 17-26页

作者： Wan yee Lau Eric CH lai Stephanie HY Lau Faculty of Medicine The Chinese University of Hong Kong Shatin New Territories Department of Surgery Pamela Youde Nethersole Eastern Hospital Department of Surgery Queen Elizabeth Hospital Hong Kong China

BACKGROUND： Associating liver partition and portal vein ligation for staged hepatectomy （ALPPS） has recently been developed to induce rapid liver hypertrophy and reduce posthepatectomy liver failure in patients with insufficient future liver remnant （FLR）. ALPPS is still considered to be in an early developmental phase because surgical indications and techniques have not been standardized. This article aimed to review the current role and future developments of ALPPS. DATA SOURCES： Studies were identified by searching MED- LINE and PubMed for articles from January 2007 to October 2016 using the keywords ＂associating liver partition and portal vein ligation for staged hepatectomy＂ and ＂ALPPS＂ Addi- tional papers were identified by a manual search of references from key articles. RESULTS： ALPPS induces more hypertrophy of the FLR in less time than portal vein embolization or portal vein ligation. The benefits of ALPPS include rapid hypertrophy 47%-110% of the liver over a median of 6-16.4 days, and 95%-100% com- pletion rate of the second stage of ALPPS. The main criticisms of ALPPS are centered on its high morbidity and mortality rates. Morbidity rates after ALPPS have been reported to be 15.3%-100%, with ≥ the Clavien-Dindo grade III morbidity of 13.6%-44%. Mortality rates have been reported to be 0%-29%. The important questions to ask even if oncologic long-term results are acceptable are： whether the gain in quality and quantity of life can be off balance by the substantial risks of morbidity and mortality, and whether stimulation of rapid liver hypertrophy also accelerates rapid tumor progression and spread. Up till now, the documentations of the ALPPS procedure come mainly from case series, and most of these series include heterogeneous groups of malignancies. The numbers are also too small to separately evaluate survival for different tumor etiologies. CONCLUSIONS： Currently, knowledge on ALPPS is limited, and prospective randomized studies are lacking. From th

关键词： associating liver partition and portal vein ligation for staged hepatectomy portal vein embolization laparoscopy colorectal liver metastases hepatocellular carcinoma

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Classification of iatrogenic bile duct injury

引用

Hepatobiliary & Pancreatic Diseases International 2007年第5期6卷 459-463页

作者： Wan-yee Lau Eric C.H.lai Department of Surgery the Chinese University of Hong KongShatinNew TerritoriesHong Kong SARChina

BACKGROUND: Iatrogenic bile duct injury continues to be an important clinical problem, resulting in serious morbidity, and occasional mortality, to patients. The ease of management, operative risk, and outcome of bile duct injuries vary considerably, and are highly dependent on the type of injury and its location. This article reviews the various classification systems of bile duct injury. DATA SOURCES: A Medline, PubMed database search was performed to identify relevant articles using the keywords 'bile duct injury', 'cholecystectomy', and 'classification'. Additional papers were identified by a manual search of the references from the key articles. RESULTS: Traditionally, biliary injuries have been classified using the Bismuth's classification. This classification, which originated from the era of open surgery, is intended to help the surgeons to choose the appropriate technique for the repair, and it has a good correlation with the final outcome after surgical repair. However, the Bismuth's classification does not encompass the whole spectrum of injuries that are possible. Bile duct injury during laparoscopic cholecystectomy tends to be more severe than those with open cholecystectomy. Strasberg's classification made Bismuth's classification much more comprehensive by including various other types of extrahepatic bile duct injuries. Our group, Bergman et al, Neuhaus et al, Csendes et al, and Stewart et al have also proposed other classification systems to complement the Bismuth's classification. CONCLUSIONS: None of the classification system is universally accepted as each has its own limitation. Hopefully, a universally accepted comprehensive classification system will be published in the near future.

关键词： laparoscopic cholecystectomy bile duct injury bile duct stricture bile leak classification

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Hepatocellular carcinoma: current management and recent advances

引用

Hepatobiliary & Pancreatic Diseases International 2008年第3期7卷 237-257页

作者： Wan-yee Lau Eric C. H. lai Faculty of Medicine The Chinese University of Hong Kong Prince of Wales Hospital Shatin New Territories Hong Kong SAR China

BACKGROUND: Hepatocellular carcinoma (HCC) is a major health problem worldwide. It is the fifth most common cancer in the world, and the third most common cause of cancer-related death. Without specific treatment, the prognosis is very poor. The goal of management is 'cancer control'-a reduction in its incidence and mortality as well as an improvement in the quality of life of patients with HCC and their families. This article aims to review the current management of HCC and its recent advances. DATA SOURCES: A MEDLINE database search was performed to identify relevant article using the keywords 'hepatocellular carcinoma', 'hepatectomy', 'liver transplantation', and 'local ablative therapy'. Additional papers and book chapters were identified by a manual search of the references from the key articles. RESULTS: Liver resection and liver transplantation remain the options that give the best chance of a cure. Recent evidence suggests that local ablative therapy may offer comparable survival results in patients with small HCC, and preserved liver function. Transarterial chemoembolization (TACE) is the most promising palliative modality for unresectable HCC, but other techniques, such as transarterial radioembolization (TARE), and local ablative therapy, have also shown comparable results. CONCLUSIONS: Early diagnosis of HCC remains a key goal in improving the prognosis of patients. During the last two decades, operative mortality and surgical outcome of liver resection and liver transplantation for HCC have improved. Progress also has been made in multi-modality therapy which can increase the chance of survival and improve the quality of life for patients with advanced HCC.

关键词： hepatocellular carcinoma hepatectomy liver transplantation local ablative therapy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：