《蚕业科学》2000-2004年引文分析

利用文献计量学方法对2000-2004年《蚕业科学》428篇载文的引文进行了统计分析。通过对引文数量、引文类型、引文语种、核心期刊、引文年代等指标的统计分析,揭示了我国蚕业科技工作者利用文献信息的一般规律及存在问题。     

Journal standards

Despite its many imperfections, the peer review process is a firmly established quality control system for scientific literature. It gives readers some assurance that the work and views that are reported meet standards that are acceptable to a journal. Maureen Revington's editorial in a recent issue of the Australian Veterinary Journal (Revington2002) gives a good concise warts and all overview of the process and is well worth reading. I have some concerns about several articles in the December 2002 issue of the New Zealand Veterinary Journal (Volume 50, Number 6), devoted to the health and welfare of farmed deer, that relate to extensive citing of non-peer reviewed papers. I can understand the need for information to flow from researchers to the wider community but that need is already satisfied by publications such as the proceedings of the Deer Branch of the New Zealand Veterinary Association and Proceedings of the New Zealand Society of Animal Production. Non-peer reviewed papers have been cited in the Journal in the past but never to the extent displayed in this particular issue. It degrades the peer-review process and creates an added burden for reviewers who are forced to grapple with the uncertainties of the science in non-peer reviewed citations. One of my fears is that this process allows science from non peer reviewed articles to be legitimised by its inclusion in a peer reviewed journal and perhaps go on to be accepted as dogma. This is a real danger given the difficulties associated with tracing back to original citations and the increasing volume of scientific literature. It also affords opportunities for agencies to pick up questionable and doubtful science and tout it as support for their products or particular points of view. If deer researchers choose to publish most of their work in proceedings then so be it. However this approach, which seems to becoming increasingly prevalent in the deer sector, is questionable from an established science point of view. For my part, I am increasingly reluctant to spend time reading non-peer reviewed material, despite its appeal. At present there are two distinct baskets for scientific literature, one for non-reviewed articles and another for peer reviewed information. I would sincerely hope that we are not going to need another basket as a halfway house for issues that fall in between that classification.     

Therapeutic hypothermia applicable to cardiac surgery

ObjectiveTo review the beneficial and adverse effects of therapeutic hypothermia (TH) applicable to cardiac surgery with cardiopulmonary bypass (CPB) in the contexts of various temperature levels and techniques for achieving TH.Databases usedMultiple electronic literature searches were performed using PubMed and Google for articles published from June 2012 to December 2014. Relevant terms (e.g. ‘hypothermia’, ‘cardiopulmonary bypass’, ‘cardiac surgery’, ‘neuroprotection’) were used to search for original articles, letters and reviews without species limitation. Reviews were included despite potential publication bias. References from the studies identified were also searched to find other potentially relevant citations. Abstracts, case reports, conference presentations, editorials and expert opinions were excluded.ConclusionsTherapeutic hypothermia is an essential measure of neuroprotection during cardiac surgery that may be achieved most effectively by intravascular cooling using hypothermic CPB. For most cardiac surgical procedures, mild to modest (32–36 °C) TH will be sufficient to assure neuroprotection and will avoid most of the adverse effects of hypothermia that occur at lower body core temperatures.     

Postweaning mulstisystemic wasting syndrome (PMWS) in pigs and porcine circovirus (PCV). An indexed bibliography

Summary This bibliography contains the bibliographic data, including the abstracts (if available), the post addresses and as far as available also the E-mail addresses of the authors, of 177 articles on postweaning multisystemic wasting syndrome (PMWS) in pigs and porcine circovirus (PCV). The bibliography concerns the period 1982-2002. The vast majority of the articles (151 of 177 being 85%) were published in the period 1998-2002. All publications except one are taken from easily accessible journals. The exception concerns reference 52 being the first report on PMWS, which has been published in a congress proceedings. To improve the accessibility of the bibliography five indices are given referring to the authors, the subjects, the serials, the years of publication and the countries.     

基于文献计量分析的蒿属植物研究进展

为深入了解蒿属植物相关研究的全球状况和前沿动态,客观反映相关研究国家、机构和个人在该研究方面的科学能力和影响力,采用Web of Science核心合集数据库中1986-2016年间收录的有关蒿属植物研究的相关文献,基于信息计量学分析方法进行了统计分析。结果表明,关于蒿属植物全球发文量总体呈上升趋势,中国的发文量居榜首,其次为美国,但在国际合作水平来看,美国的合作贡献最大,与中国有着密切合作关系的是英国。中国科学院占据总发文量、一作总数和一作被引次数的首位,香港大学在总被引用次数和一作被引次数方面排名最高。该研究方面发文的主要期刊有Planta Medica,Phytochemistry,Journal of Natural Products等,平均被引次数最高的是顶级期刊Nature。从学科分布来看,植物科学、化学和药理学/配药学位居相关研究的前三;从类别来看,理学占排名前10学科的50%;从科学层次来看,基础和技术科学占比较大,工程科学的相关发文量有待提高。香港大学的Sy在黄蒿提取物方面的系列研究具有较高的影响力,西班牙瓦伦西亚大学Marco和北京大学Wen两位学者的相关研究被引频次较高。在研究前沿趋势方面,蒿属植物的化学成分及其医药用途方面是研究热点。     

A meta-analysis of the milk-production response after anthelmintic treatment in naturally infected adult dairy cows

Meta-analysis was used to estimate the effects of anthelmintic treatment on milk production in dairy cows. The literature search included peer-reviewed journals (both full articles and abstracts), conference proceedings and theses and included documents written in English, Spanish, French, Portuguese or Italian. The study outcome was defined as the difference in milk production (kg/cow per day) between treated and untreated cows. Random effect meta-analyses were performed on 75 trials published between 1972 and 2002. The combined estimate after controlling for publication bias and/or small-study effect was of 0.35 kg/cow per day. Significant variation among studies was detected and although several variables were associated with the study outcome, they did not significantly reduce the unexplained variability among trials. Trials reporting the use of endectocides had higher milk-production response compared with trials using older anthelmintics. Similarly, whole-herd treatment trials or trials which applied the treatment in mid-lactation or strategically throughout the year had higher response compared with calving or dry-period treatment trials. Trials reporting the results as total 305-day milk production had lower response compared with trials which measured production as daily milk weight. Primiparous cows trials had lower responses compared with multiparous cows trials.     

Is there a place for dexmedetomidine in equine anaesthesia and analgesia? A systematic review (2005–2017)

The objective of this review was to perform a literature compilation of all the equine publications that used dexmedetomidine as the first article on this topic was published, in 2005. We also aimed to answer the question whether the use of dexmedetomidine can currently be justified. For that, we compiled information from databases, such as PubMed, Google Scholar and Web of Science and the proceedings of the last veterinary anaesthesiology meetings. Dexmedetomidine is an attractive drug to be used in horses, mainly due to its pharmacokinetic profile and pharmacodynamics that favour its use as intravenous constant rate infusion (CRI). Nowadays, its clinical use is popular for sedation in prolonged standing procedures and during partial intravenous anaesthesia (PIVA) and total intravenous anaesthesia (TIVA). However, legal requirements for its use should be taken into account.     

基于Web of Science数据库禾草内生真菌生物碱论文计量统计分析

禾草内生真菌生物碱可以增强寄主植物的抗逆性,为了解禾草内生真菌生物碱的研究现状和发展趋势,基于Web of Science数据库,对20年来（2000-2019年）国内外发表的禾草内生真菌生物碱论文进行检索筛选,以禾草内生真菌生物碱为关键词,共检索到646篇相关文献,其中我国33篇。对相关文献进行计量学分析发现：生物碱发文数量排名前三的国家是美国、新西兰和中国;文献平均被引次数最多的是中国;20年来,我国关于禾草内生真菌生物碱的文章数量稳步上升,且不断有文章被国际高水平的期刊发表。我国禾草内生真菌生物碱的研究单位主要集中在兰州大学和南开大学等高校,研究内容主要是生物碱生物学特征、生态作用以及影响共生体产碱的因素等。而关于生物碱致毒机理和人工合成途径的研究较少,今后需加强对其的深入研究。     

Frequency of appropriate and inappropriate presentation and analysis methods of ordered categorical data in the veterinary dermatology literature from January 2003 to June 2006

Clinical outcomes that are difficult to measure directly are often graded with ordinal scales in the veterinary dermatology literature to approximate objective evaluation. Ordered categorical scales require statistical presentation and analysis methods consistent with the structure of the data. The objective of this study was to determine the frequency of inappropriate presentation and analysis methods of ordered categorical data in the recent veterinary dermatology literature. A total of 62 articles published between 1 January 2003 and 30 June 2006 in 16 journals reported categorical scales and were included in the study. The presentation and analysis methods of ordered categorical data were classified as appropriate or inappropriate based on published recommendations. Forty articles (64.5%) utilized a median of four ordinal scales (range 1-13). Inappropriate presentation methods of ordered categorical data were identified in 23 of 40 articles (57.5%). These included reporting inappropriate summary statistics (n = 17) and summation of ad hoc numerical rating scales (n = 15). Inappropriate analytical methods were used in nine of 40 articles (22.5%). These included inappropriate use of t-tests (n = 3) and analysis of variance (anova, n = 6). The frequency of inappropriate presentation and analysis methods of ordered categorical data in the veterinary dermatology literature is similar to that reported for several fields in the human medical literature. In order to reduce the likelihood of making unwarranted implications or conclusions regarding ordinal data, authors should follow established guidelines for methods of presentation and analysis of ordered categorical scales.     

基于CNKI数据库的禾草与非禾草内生真菌文献计量分析

为明确我国关于内生真菌的研究现状及热点,以1999-2019年中国知网(CNKI)数据库中内生真菌为关键词的相关文献为数据源,从检索结果中手动选择禾草与非禾草内生真菌相关文献,进行了文献计量学分析.共检索出5333篇与内生真菌相关的文献,其中377篇与禾草Epichlo?属内生真菌相关文献.结果表明,非禾草内生真菌相关...     

Staying current by searching the veterinary literature

The body of knowledge in veterinary medicine and the biomedical sciences continues to grow logarithmically, and learning about new developments in veterinary medicine requires successful navigation of recently published literature worldwide. This article examines how veterinarians can use different types of automated services from databases and publishers to search the current and past literature, access articles, and manage references that are found.     

A meta-analysis of the effects of high ambient temperature on growth performance of growing-finishing pigs

High ambient temperature (T) is one of the most important climatic factors influencing pig performance. Increased T occurs sporadically during summer heat waves in temperate climates and year round in tropical climates. Results of published experiments assessing the effects of high T on pig performance are surprisingly variable. Thus, a meta-analysis was performed to aggregate our knowledge and attempt to explain differences in the results across studies on the effect of increased T on ADFI and ADG in growing-finishing pigs. Data for ADFI and ADG were extracted from 86 and 80 trials, respectively, from articles published in scientific journals indexed in PubMed, Science Direct, and from proceedings of scientific meetings through November 2009. Data on ADFI and ADG were analyzed using a linear mixed model that included the linear and the quadratic effects of T and BW, and their interactions as continuous, fixed effects variables, and the trial as a random effect factor (i.e., block). In addition, the effects of housing type (2 levels: individual and group housing) and the year of publication (3 levels: 1970 to 1989, 1990 to 1999, and 2000 to 2009) on the intercept and the linear regression term for T (i.e., the slope) were also tested. Results showed that high T had a curvilinear effect on ADFI and ADG and that this effect was more pronounced in heavier pigs. Across T, ADFI was less when pigs were group-housed. The intercept and the regression coefficient (slope) for T were significantly affected by the year of publication. The effect of increased T was greater in more contemporary works, suggesting that modern genotypes could be more sensitive to heat stress than older genotypes of lesser growth potential. In conclusion, pig performance decreases at an accelerating rate as T is increased. The large between-study variability on the effects of high T on pig performance is partially explained by differences in pig BW and to a lesser extent by the year the study was published.     

基于文献计量学解析山羊产羔数研究态势

为充分了解国内、外山羊产羔数的研究现状和发展趋势,为我国山羊繁殖领域提供新思路,运用文献计量学方法,以“山羊产羔数”为检索词,在Web of Science核心合集数据库（1992-2022年）和CNKI数据库（1958-2022年）中进行主题精准检索,并运用Excel 2019、GraphPad Prism v5.01和VOS viewer等软件分别对1958-1991年、1992-2001年、2002-2011年和2012-2022年四个时间段的年度发表文献数量、各国家发表论文情况、机构、作者、期刊、关键词、研究方向等方面进行可视化分析,并对结果进行总结和概述。研究发现：我国在“山羊产羔数”方面的研究呈整体上升趋势,具有较大的发展潜力,正逐渐走向世界领先地位,但我国发表论文篇均被引频次仍与法国等国家存在差距;我国学者在注重发表论文数量的同时,还应注重研究的创新性和实践性,从而使得所发表论文在国际上展现更深远的影响力。     

Open access of publications by veterinary faculty in the United States and Canada

The free availability of full-text veterinary publications in MEDLINE-indexed journals by US and Canadian veterinary faculty from 2006-7 was determined. Additionally, publishing databases were searched to obtain general statistics on veterinary publishing. A survey of institutional initiatives to promote open-access journals and institutional repositories was also performed. Veterinary faculty published a total of 4,872 articles indexed by MEDLINE in 679 different journals. Of these articles, 1,334 (27%) were available as free full text and were published in 245 different journals. Although 51 veterinary-specific journals offering immediate and free full-text access were identified, few articles in this study appeared in these titles. Rather, most free scholarly articles by veterinary faculty appeared in journals with an embargo period. Academic veterinary institutions may want to recommend acceptance of alternate forms of information dissemination (such as open-access journals and journals published only digitally) to encourage greater global dissemination of their research findings. The promotion and use of digital institutional repositories is also an area for future investment and warrants additional research.     

Canine scent detection of human cancers: A review of methods and accuracy

Early detection of cancers, although essential for treatment effectiveness, can be difficult to achieve, and some tests introduce additional health risks. New, non-invasive detection methods with greater sensitivity and specificity are needed. Several authors have published research suggesting that dogs may be able to detect lung, breast, prostate, ovarian, and melanoma cancers by smelling skin lesions, urine, exhaled breath, and surgically extracted tumors. We conducted a systematic search using the PubMed and EMBASE databases to identify all known published data on canine scent detection of cancers. Of 531 potentially relevant publications, 11 full text articles were examined, and 5 were selected for inclusion in the review. Two studies involved dogs detecting breast cancer (sensitivity 88% using exhaled breath and 22% using urine; specificity was 98% and 20%, respectively), 1 involved bladder cancer (41% of urine samples detected), 1 involved melanoma (75–85.7% of in situ tumors detected), 1 involved lung cancer (sensitivity 99% and specificity 99% using exhaled breath), 1 involved ovarian cancer (sensitivity 100% and specificity 97.5% using thawed frozen tumor samples), and 1 involved prostate cancer (18% of urine samples detected). One study on ovarian cancer is in progress. Early successes with canine scent detection suggest chemical analysis of exhaled breath may be a valid method for cancer detection. Tests using exhaled breath showed better sensitivity and specificity than with urine. Future research should target other tumor types, and seek to identify what exhaled compounds may signal a cancer diagnosis.     

Treatment of canine Old World visceral leishmaniasis: a systematic review

Canine visceral leishmaniasis is a systemic disease caused by Leishmania infantum. The aim of this systematic review was to identify and evaluate the evidence of efficacy of interventions for treatment or prevention of canine visceral leishmaniasis, and to propose recommendations for or against their use. Forty-seven articles describing clinical trials published between 1980 and 2004 fulfilled selection criteria. The evaluation of clinical trials provided good evidence for recommending the use of meglumine antimoniate at a minimum dosage of 100 mg kg(-1) daily for at least 3-4 weeks, combined with allopurinol in order to obtain a good clinical efficacy and a reduced relapse rate. The evaluation of the articles also provided fair evidence for recommending the use of pentamidine (4 mg kg(-1) twice weekly) and aminosidine (5 mg kg(-1) twice daily) for 3-4 weeks. There was insufficient evidence for recommending the use of allopurinol alone, amphotericin B, buparvaquone, ketoconazole, enrofloxacin, and the combinations of metronidazole with spiramicyn or metronidazole with enrofloxacin. Fair evidence against the use of aminosidine at high dosages (20-80 mg kg(-1) per day) was proposed due to its side effects. Evaluation of articles on repellent measures against sand fly vectors of leishmaniasis provided good evidence for recommending deltamethrin collars and fair evidence for recommending spot-on permethrin.