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931.
在行政审批制度改革实践中,有关机关常常被各种规范性文件上授权的词句所迷惑,不能准确识别出以各种形式表现出来的行政许可权,原因在于我国立法并无具体统一的行政许可判断标准方面的规定。有必要借鉴国外行政许可识别的经验和理论,从行政审批制度改革的指导思想、行政许可的前提、行政许可的性质、行政许可的类型四个方面来构建我国行政许可的识别理论。依据此理论对实践中有争议的行政权进行类型化分析,提炼出审批、批准、审核、核准、登记五种行政许可的表现形式。  相似文献   
932.
党性定期分析制度是加强党的先进性和执政能力建设的一项重要的制度创新。定期分析党性是实现党性在动态发展中不断得到进一步锻炼的制度设计创新。  相似文献   
933.
监狱民警精神是民警队伍建设和监狱事业赖以生存和发展的灵魂和支柱。弘扬和培育新时期江苏监狱民警精神,有必要对该精神的内涵和监狱民警精神的概念、特点进行辨析.深刻把握监狱民警精神的功能,充分认识塑造监狱民警精神的重要性和必要性。同时,结合江苏监狱工作形势发展的实际,其对江苏监狱警察精神进行了提炼和内涵解读,对弘扬和培育民警精神的途径进行了阐述。  相似文献   
934.
Abstract: When rope is found at a crime scene, the type of fiber is currently identified through its microscopic characteristics. However, these characteristics may not always unambiguously distinguish some types of rope from others. If rope samples contain cells from the plants of origin, then DNA analysis may prove to be a better way to identify the type of rope obtained from a crime scene. The objective of this project was to develop techniques of DNA analysis that can be used to differentiate between ropes made from Cannabis sativa L. (hemp), Agave sisalana Perrine (sisal), Musa textilis Née (abaca, “Manila hemp”), Linum usitatissimum L. (flax), and Corchorus olitorus L. (jute). The procedures included extracting the DNA from the rope, performing polymerase chain reaction (PCR) using the extracted DNA as a template, and analyzing the DNA products. A primer pair for PCR, chosen from within a chloroplast gene for the large subunit of ribulose bisphosphate carboxylase/oxygenase, was designed to be specific for plant DNA and complementary to the genes from all five plants. The resulting PCR fragments were approximately 771 base pairs long. The PCR fragments, distinguished through base sequence analysis or restriction enzyme analysis, could be used to identify the five different rope types. The procedure provides a useful addition to visual methods of comparing rope samples.  相似文献   
935.
女性与科学是研究科学及科学史问题的重要内容。国内外学者近年来,围绕女性与科学发表了大量的文章,本文着重从"人类发展的需要、社会进步和时代发展的需要、女性求知需要、自我实现需要"和"传统科学发展存在偏差、女性有未开发的智力和性别优势、女性有独特的关注内容、研究方法"等女性与科学关联的角度进行剖析,为女性进入科学提供一个新的合理性和内在逻辑可能。  相似文献   
936.
文章运用社会语言学的做法,采集大连市内四区100个大连生、大连长的,不同职业人群的语音进行了分析,运用数学方法统计其在不同语体中普通话语音变体的百分比,目的在于侦破利用言语进行作案的案件时,为分析犯罪嫌疑人职业特点提供科学依据。  相似文献   
937.
The differentiation between systemic exposure and external contamination for certain drug groups has been frequently referred to as one of the limitations of in drug testing in hair. When hair samples are used, three steps are usually employed in order to minimise the possibility of external contamination causing a misinterpretation. The first consists of decontaminating hair samples by washing the hair before analysis, the second is the detection of the relevant metabolites in the hair samples and the third is the use of cut-off levels. Difficulty in the interpretation arises when metabolites are not detected either due to external contamination of the hair or low doses of the drugs used. A wash protocol needs to be practical and ideally remove any drug deposited on the external portion of the hair.  相似文献   
938.
939.
刑事化验常涉及较多的化学理论知识。对常见的、容易混淆的、有联系又有区别的十六个化学概念进行辨析。  相似文献   
940.
Forensic examiners must determine whether both latent fingerprint development and DNA profiling can be performed on the same area of an evidence item and, if only one is possible, which examination offers the best chance for identification. Latent fingerprints can be enhanced by targeting different components of fingerprint residues with sequential chemical treatments. This study investigated the effects of single-reagent and sequential latent fingerprint development processes on downstream DNA analysis to determine the point at which latent fingerprint development should be stopped to allow for DNA recovery. Latent fingerprints deposited on copy paper by one donor were developed using three sequential processes: 1,8-diazafluoren-9-one (DFO) → ninhydrin → physical developer (PD); 1,2-indanedione-zinc (IND-Zn) → ninhydrin → PD; and IND-Zn → ninhydrin → Oil Red O (ORO) → PD. Samples were examined after the addition of each chemical treatment. DNA was collected with cotton swabs, extracted, quantified, and amplified. DNA yields, peak heights, number of alleles obtained, and percentage of DNA profiles eligible for CODIS upload were examined. DNA profiles were obtained with varying degrees of success, depending on the number and type of treatments used for latent fingerprint development. The treatments that were found to be the least harmful to downstream DNA analysis were IND-Zn and IND-Zn/laser, and the most detrimental treatments were DFO, DFO/laser, and PD. In general, as the number of treatments increase, the opportunities for DNA loss or damage also increase, and it is preferable to use fewer treatments when developing latent fingerprints prior to downstream DNA processing.  相似文献   
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