Newton’s “satis est”: A new explanatory role for laws

In this paper I argue that Newton’s stance on explanation in physics was enabled by his overall methodology and that it neither committed him to embrace action at a distance nor to set aside philosophical and metaphysical questions. Rather his methodology allowed him to embrace a non-causal, yet non-inferior, kind of explanation. I suggest that Newton holds that the theory developed in the Principia provides a genuine explanation, namely a law-based one, but that we also lack something explanatory, namely a causal account of the explanandum. Finally, I argue that examining what it takes to have law-based explanation in the face of agnosticism about the causal process makes it possible to recast the debate over action at a distance between Leibniz and Newton as empirically and methodologically motivated on both sides.     

Evidence for two independent prostate cancer risk-associated loci in the HNF1B gene at 17q12

We carried out a fine-mapping study in the HNF1B gene at 17q12 in two study populations and identified a second locus associated with prostate cancer risk, approximately 26 kb centromeric to the first known locus (rs4430796); these loci are separated by a recombination hot spot. We confirmed the association with a SNP in the second locus (rs11649743) in five additional populations, with P = 1.7 x 10(-9) for an allelic test of the seven studies combined. The association at each SNP remained significant after adjustment for the other SNP.     

论公路施工监理工作的质量控制

文章就影响公路工程质量的因素,论述了质量监控的基本程序,提出质量控制的基本方法及所应采取的措施.     

硬度对合金材料耐电压强度的影响

结合材料学与电子学的有关理论和实验方法，以铬青铜（１％Ｃｒ）和４０Ｃｒ钢为例，考察了合金材料硬度对其耐电压强度的影响．实验结果表明：合金材料的耐电压强度与其硬度、成分和显微组织等多种因素有关，将硬度的高低做为衡量其耐电压强度高低的唯一标准是不合适的     

浅析太原市图书馆虚拟参考咨询服务的开展

虚拟参考咨询服务是当今图书馆服务的热门话题,文章从虚拟参考咨询的3种主要方式进行分析,论述了太原市图书馆虚拟参考咨询服务的建设、开展和完善。     

Efficient Multi-Resolution Compression Algorithm for Disk-Based Backup and Recovery

0 IntroductionTraditionally,there are two kinds of compression meth-ods developedfor tape-based backup.Oneisincrementalbackup method, which can distinguish modified files , andbackup only those modifiedfilesinthe backup set . The otherone is streamcompression, which eli minate redundancy in asingle file.In a large backup system,numerous redundant data ex-ists across files .Files with the same content may be foundinother nodes due tofile reduplication and distribution;a partlymodifiedfile may …     

Ileal absorption of disodium ethane-1-hydroxy-1,1-diphosphonate (EHDP) and disodium dichloromethylene diphosphonate (Cl2 MDP) in the chick

Résumé Une proportion non négligeable de disodium ethane-1-hydroxy-1,1-diphosphonate (EHDP) et de disodium dichloromethylenediphosphonate (Cl₂MDP) peut être absorbée au niveau de l'ileum de poulet. L'absorption du Cl₂MDP est significativement supérieure à celle de l'EHDP.

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Acknowledgements. We thank MissLinda Senior for her skillful technical assistance. This work has been supported by the Procter and Gambel Company, by the US National Institute of Health (Grant No. AM 07256) and by the Swiss National Research Fund (Grant No. 3.326.70 Sr). R. H. W. was supported, in part, by the John Simon Guggenheim Foundation.     

脑卒中患者恢复期康复护理的研究

脑卒中是最常见的神经系统疾病，具有高发病率、高致残率、高致死率以及高复发率的临床特点。在度过危险期后，脑卒中患者常因脑功能区的损伤遗留下躯体功能障碍和精神障碍，从而严重影响生活质量及预后转归。合理的康复护理方法、积极的卒中后康复护理有助于脑卒中患者的康复，对脑卒中预后起关键作用。文章聚焦于脑卒中患者康复护理的研究进展，全面阐述脑卒中患者恢复期康复护理中的临床问题及评估方法，并对目前相关的康复护理研究进行综述，以期为脑卒中患者的康复护理提供积极的思路，提高临床护理水平，改善卒中患者的预后。     

析汪野亭瓷板画与王大凡瓷板画的异同

"珠山八友"是一群志同道合的瓷板画家自由集结而成的一个画家群体,他们的瓷板画之间必定有相同之处才能相聚磋商,亦必定有不同之处才能各显长处。从瓷板画的创作旨趣、创作题材、创作技法、人生境遇等角度考察汪野亭的瓷板画与王大凡的瓷板画之间和而不同之处,希望能帮助人们进一步认识这两位瓷艺大家。     

二氧化氯与氯对饮用水中消毒副产物形成的研究

采用氯和二氧化氯作为消毒剂,用模拟水样和实际水样比较这两种消毒剂的消毒副产物产生量及其消毒效果.实验结果表明:在不同腐殖酸浓度、消毒剂浓度及pH下,氯消毒产生的三氯甲烷都比二氧化氯消毒产生的多;从成本上看,不同二氧化氯制备方法所需的药剂成本都比液氯高,其中过氧化氢法所需的成本较低,是液氯的1.4～2.5倍;而盐酸法和亚氯酸钠法所需的成本较高,是液氯的4～5倍.