伊比利亚文献对长城早期记载一瞥

近代欧洲西方国家来华的商贾、传教士、旅行家,以葡萄牙人、西班牙人为最早。他们对中国的文字记载中,不乏对长城的涉及与描述,因此,伊比利亚文献对于我们了解基督教文化对长城的评价及其在旧世界传播的起始时间具有决定性意义。本文比较详细地爬梳了16-17世纪伊比利亚史料中关于长城的各种记载,分析了几部主要历史著作的史料来源。     

论高校图书馆信息服务工作的深化

文章指出高校图书馆为应对社会信息化和信息服务产业化的挑战,应深化信息服务工作,并提出具体措施,如开发馆藏资源、更新服务理念、建立信息网络数据库等.     

Molecular hydrogen is a promising therapeutic agent for pulmonary disease

Molecular hydrogen exerts biological effects on nearly all organs. It has anti-oxidative, anti-inflammatory, and anti-aging effects and contributes to the regulation of autophagy and cell death. As the primary organ for gas exchange, the lungs are constantly exposed to various harmful environmental irritants. Short- or long-term exposure to these harmful substances often results in lung injury, causing respiratory and lung diseases. Acute and chronic respiratory diseases have high rates of morbidity and mortality and have become a major public health concern worldwide. For example, coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has become a global pandemic. An increasing number of studies have revealed that hydrogen may protect the lungs from diverse diseases, including acute lung injury, chronic obstructive pulmonary disease, asthma, lung cancer, pulmonary arterial hypertension, and pulmonary fibrosis. In this review, we highlight the multiple functions of hydrogen and the mechanisms underlying its protective effects in various lung diseases, with a focus on its roles in disease pathogenesis and clinical significance.     

企业所得税改革的利弊分析

2007年,十届全国人大五次会议闭幕会表决通过了《中华人民共和国企业所得税法》。新的企业所得税法将于2008年1月1日起实施。通过对内外资企业所得税改革背景、所得税改革内容、所得税改革对经济影响的介绍,提出了内外资企业在所得税改革中的机遇和挑战。为企业更好地适应所得税改革提供参考。     

加快新农村建设强化农村转移劳动力培训

新农村建设是国家为了实现农业、农村经济建设全面发展而制订的一个宏观目标。最终目的是要解决三农问题,实现农村的发展和农民的共同富裕。要想使农民富裕,根本出路是农村剩余劳动力向城镇和非农产业转移。但是农民文化水平较低成为农村剩余劳动力有效转移的最大障碍。因此,对农村转移劳动力进行有效的培训成为必须;如何充分利用有限的培训资源,开展有效的转移劳动力培训成为必须考虑的问题。     

Coping With the Unexpected in Childbirth: A Thematic Analysis

This article reports original research that describes new mothers'' experiences of birth and maternity care. Qualitative data were collected through a survey on birth satisfaction, which included space for women to provide comments about their birth and experience of care. Thirty-nine women provided comments that were analyzed using the thematic analysis method. Two themes emerged from the women''s experiences: “Unexpected birth processes: expectations and reality” and “Coping with birth: the role of health-care staff.” Participants described unexpected birthing processes, their experiences of care, and maternity care staff''s contributions to coping with birth. Implications for practice for childbirth professionals include promotion of physiologic birth, respectful person-centered care during all phases of perinatal care, and the value of childbirth preparation.     

新建地方高校的目标定位与实施

高校扩招以来的新建地方高校,存在着对自己所处的位置认识不清、定位不准、忽视自身优势、贪大、求全、追高的倾向,影响了学校的健康发展。其目标定位要坚持能级原理,确定自身服务类型;立足现实,面向市场,找准服务切入点;坚持多样性与突出特色相结合三大原则。日标的实施要注重突出教学中心,调动教师积极性,办出特色,提高教学质量。     

Molecular design revitalizes the low-cost PTV-polymer for highly efficient organic solar cells

Developing photovoltaic materials with simple chemical structures and easy synthesis still remains a major challenge in the industrialization process of organic solar cells (OSCs). Herein, an ester substituted poly(thiophene vinylene) derivative, PTVT-T, was designed and synthesized in very few steps by adopting commercially available raw materials. The ester groups on the thiophene units enable PTVT-T to have a planar and stable conformation. Moreover, PTVT-T presents a wide absorption band and strong aggregation effect in solution, which are the key characteristics needed to realize high performance in non-fullerene-acceptor (NFA)-based OSCs. We then prepared OSCs by blending PTVT-T with three representative fullerene- and NF-based acceptors, PC₇₁BM, IT-4F and BTP-eC9. It was found that PTVT-T can work well with all the acceptors, showing great potential to match new emerging NFAs. Particularly, a remarkable power conversion efficiency of 16.20% is achieved in a PTVT-T:BTP-eC9-based device, which is the highest value among the counterparts based on PTV derivatives. This work demonstrates that PTVT-T shows great potential for the future commercialization of OSCs.     

New physics searches at the BESIII experiment

The standard model (SM) of particle physics, comprised of the unified electroweak and quantum chromodynamic theories, accurately explains almost all experimental results related to the micro-world, and has made a number of predictions for previously unseen particles, most notably the Higgs scalar boson, that were subsequently discovered. As a result, the SM is currently universally accepted as the theory of the fundamental particles and their interactions. However, in spite of its numerous successes, the SM has a number of apparent shortcomings, including: many free parameters that must be supplied by experimental measurements; no mechanism to produce the dominance of matter over antimatter in the universe; and no explanations for gravity, the dark matter in the universe, neutrino masses, the number of particle generations, etc. Because of these shortcomings, there is considerable incentive to search for evidence for new, non-SM physics phenomena that might provide important clues about what a new, beyond the SM theory (BSM) might look like. Although the center-of-mass energies that BESIII can access are far below the energy frontier, searches for new, BSM physics are an important component of its research program. This report reviews some of the highlights from BESIII’s searches for signs of new, BSM physics by: measuring rates for processes that the SM predicts to be forbidden or very rare; searching for non-SM particles such as dark photons; performing precision tests of SM predictions; and looking for violations of the discrete symmetries C and CP in processes for which the SM expectations are immeasurably small.     

Modern health worries in Pakistani immigrant women in Oslo,Norway

BackgroundThe main study objective was to investigate modern health worries (MHW) in a group of Pakistani immigrant women in Norway, and to compare it with a group of ethnic Norwegian women. A further aim was to examine differences in MHW with level of education and acculturation in this immigrant group.MethodsThe Pakistani women (N = 101) completed a questionnaire to assess MHW and sociodemographic variables. MHW data were obtained via telephone interviews for the subsample of Norwegian women (N = 344).ResultsThe Pakistani women generally showed lower levels of MHW than did the ethnic Norwegian women. However, when stratified on education, the difference was mainly apparent in the low and middle educational groups. The Pakistani women with high levels of education tended to report higher levels of MHW than those with lower education levels. They reported significantly higher levels of worries about avian flu, radiation from computer screens, and vaccination programmes than did the ethnic Norwegian women on the same high educational level. Their different degrees of acculturation in the Norwegian society appeared to influence their levels of MHW, as the assimilated women showed the highest levels of MHW, whereas the separated women showed the lowest levels.ConclusionsThe group of Pakistani immigrant women was very heterogeneous in terms of MHW, and health authorities and health care workers should therefor adapt health and risk information according to different levels of integration and education.