429 research outputs found
Eccoptolonthus luteus
No full text9. Eccoptolonthus luteus (Li & Zhou, 2011) Li & Zhou, 2011: 700–705 (Pseudohesperus, type locality: China, Sichuan); Newton, 2015:13 (transferred to Eccoptolonthus, catalog); Schülke & Smetana, 2015: 1021 (Eccoptolonthus, catalog); Li, 2019: 425 (Eccoptolonthus, catalog). Materials examined. Holotype: China: Sichuan: ♂, Qingchengshan (30°54’N, 103°31’E), 22–24.VIII.2005, Li Xiaoyan collected (IZ-CAS); Paratypes: 2 ♂♂, 15 ♀♀, same data as holotype, but 1 ♀, Chen Yongjie collected, 4 ♀♀, Zhang Yejun collected, 2 ♀♀, Zhao Caiyun collected (IZ-CAS); Sichuan : 2 ♀♀, Dujiangyan (30°54’N, 103°30’E), Puyang: Huaxi Village, 676 m, 12.XII.2009, Zhou Yulingzi collected (IZ-CAS); 1 ♂, 8 ♀♀, Emeishan (29°25’N, 103°20’E), 700–1800 m, 28–30.VIII.2005, Li Xiaoyan collected (IZ-CAS); 2 ♂♂, 7 ♀♀, Baoxing (30°25’N, 102°49’E), 1. IV.2005, Li Xiaoyan collected (IZ-CAS). Distribution. China (Sichuan).Published as part of Fei, Xu-Dong & Zhou, Hong-Zhang, 2021, Revision of Eccoptolonthus Bernhauer (Coleoptera: Staphylininae: Philonthina) with descriptions of four new species from China, pp. 473-498 in Zootaxa 4949 (3) on page 490, DOI: 10.11646/zootaxa.4949.3.3, http://zenodo.org/record/464046
Mycobacterium tuberculosis-Induced Upregulation of the COX-2/mPGES-1 Pathway in Human Macrophages Is Abrogated by Sulfasalazine
No full textMacrophages are the primary human host cells of intracellular Mycobacterium tuberculosis (M.tb) infection, where the magnitude of inflammatory reactions is crucial for determining the outcome of infection. Previously, we showed that the anti-inflammatory drug sulfasalazine (SASP) significantly reduced the M.tb bactericidal burden and histopathological inflammation in mice. Here, we asked which genes in human inflammatory macrophages are affected upon infection with M.tb and how would potential changes impact the functional state of macrophages. We used a flow cytometry sorting system which can distinguish the dead and alive states of M.tb harbored in human monocyte-derived macrophages (MDM). We found that the expression of cyclooxygenase-2 and microsomal prostaglandin E(2) synthase (mPGES)-1 increased significantly in tagRFP(+) MDM which were infected with alive M.tb. After exposure of polarized M1-MDM to M.tb (H37Rv strain)-conditioned medium (MTB-CM) or to the M.tb-derived 19-kD antigen, the production of PGE(2) and pro-inflammatory cytokines increased 3- to 4-fold. Upon treatment of M1-MDM with SASP, the MTB-CM-induced expression of COX-2 and the release of COX products and cytokines decreased. Elevation of PGE(2) in M1-MDM upon MTB-CM stimulation and modulation by SASP correlated with the activation of the NF-κB pathway. Together, infection of human macrophages by M.tb strongly induces COX-2 and mPGES-1 expression along with massive PGE(2) formation which is abrogated by the anti-inflammatory drug SASP
Quedius (Raphirus) muscicola Cameron 1932
No full textQuedius (Raphirus) muscicola Cameron, 1932 (Figs. 15, 15- 1) Cameron, 1932: 295 (Quedius; subgenus Raphirus; Type locality: India, Ghum district); Scheerpeltz, 1933: 1450 (catalog); Scheerpeltz, 1965: 112 (Myanmar); Smetana, 1988: 253 (lectotype designation; redescription; India, Myanmar, Nepal); Smetana, 1992: 5 (Nepal); Smetana, 1997: 131 (China (Yunnan)); Herman, 2001: 3214 (world catalog); Smetana, 2004: 667 (catalog for Palaearctic region); Smetana, 2012 a: 44 (redescription; China (Guizhou, Hubei, Shaanxi, Sichuan, Yunnan)). Quedius (Raphirus) dohertyi Cameron, 1932: 297 (Quedius; subgenus Raphirus; Type locality: Myanmar, Ruby Mines); Scheerpeltz, 1933: 1438 (catalog); Smetana, 1988: 253 (synonym of muscicola); Herman, 2001: 3214 (world catalog); Smetana, 2004: 667 (catalog for Palaearctic region). Quedius (Raphirus) heterogaster Cameron, 1944: 14 (Quedius; subgenus Raphirus; Type locality: India, Chakrata district, Kanasar); Smetana, 1988: 253 (lectotype designation; synonym of muscicola); Herman, 2001: 3215 (world catalog); Smetana, 2004: 667 (catalog for Palaearctic region). Material examined. CHINA: Sichuan Province: 1 ♂, Wan County, Wangerbao Nature Reserve, 28. V. 1994, coll. Xingke Yang; 1 ♂, Dujiangyan City, Qingcheng Mountain, 4. VI. 1997, coll. Haisheng Zhou; 4 ♂♂, 9 ♀, Baoxing County, Fengtongzhai Nature Reserve, 6–7. VI. 1997, coll. Haisheng Zhou; 1 ♂, Baoxing County, Yongfu, Pujigou, 2300 m, 11–14. VIII. 2003, coll. Xiaodong Yu; 1 ♂, Wolong National Nature Reserve, Wulidun, 2460 m, 5–8. VIII. 2004, coll. Xiaodong Yu; 1 ♀, Wolong National Nature Reserve, Wulidun, 2270 m, 22–25. IX. 2004, coll. Xiaodong Yu; 1 ♂, 1 ♀, Dujiangyan City, Qingcheng Mountain, 21. VIII. 2005, coll. Yejun Zhang; 1 ♀, Dujiangyan City, Qingcheng Mountain, 23. VIII. 2005, coll. Xiaoyan Li; 1 ♂, Dujiangyan City, Longchi Mountain, 26. VIII. 2005, coll. Caiyun Zhao; 1 ♂, 3 ♀♀, Dujiangyan City, Longchi Mountain, 1800 m, 26. VIII. 2005, coll. Xiaoyan Li; 1 ♂, Emeishan City, Emei Mountain, 28. VIII. 2005, coll. Caiyun Zhao; 2 ♀♀, Emeishan City, Emei Mountain, 28. VIII. 2005, coll. Yejun Zhang; 2 ♀♀, Emeishan City, Emei Mountain, 1200 m, 29. VIII. 2005, coll. Xiaoyan Li; 1 ♀, Baoxing County, Fengtongzhai Nature Reserve, Dashuigou, 1500 m, 2. IX. 2005, coll. Hongzhang Zhou and Caiyun Zhao; 1 ♂, 2 ♀♀, Baoxing County, Fengtongzhai Nature Reserve, Dashuigou, 1500 m, 3. IX. 2005, coll. Caiyun Zhao; 4 ♂♂, 2 ♀♀, Baoxing County, Fengtongzhai Nature Reserve, Dashuigou, 1500 m, 2–3. IX. 2005, coll. Xiaoyan Li; 1 ♂, 1 ♀, Lushan County, Longmen Village, 15. X. 2005, coll. Haifeng Chen. Measurements. BL = 6.9 mm, BW = 1.4 mm, HL/PL/EL = 1.00: 1.10: 1.30, HW/PW/EW/AW = 1.00: 1.11: 1.42: 1.27, HW/HL = 1.02, HEL /HTL = 8.96, PW/PL = 1.03, EW/EL = 1.11, ESL/EL = 0.55. Distribution. Quedius muscicola Cameron is known from Myanmar, and from the mountain areas from the Himalayan range (India, Nepal) to southwestern China (Gansu, Guizhou, Hubei, Shaanxi, Sichuan and Yunnan Province), at altitudes from 650 m to 2800 m. Many of the examined specimens were collected in bushes, stacks of withered grass, leaf litter, or at the edges of creeks.Published as part of Cai, Yan-Peng & Zhou, Hong-Zhang, 2015, Taxonomy of the subgenus Quedius (Raphirus) Stephens (Coleoptera: Staphylinidae: Staphylinini: Quediina) with descriptions of four new species from China, pp. 151-196 in Zootaxa 3990 (2) on page 188, DOI: 10.11646/zootaxa.3990.2.1, http://zenodo.org/record/24544
Three Essays on Perceived Overqualification
No full textPerceived overqualification (POQ), which refers to a situation wherein individuals possess more qualifications than those required by the job, has been commonplace in the world. Previous research on the effects of POQ on job performance (e.g., task performance and organizational citizenship behavior [OCB]) has been mixed and suggests the presence of moderators. However, little research has examined the possible moderators. Furthermore, research on the mechanisms linking POQ and outcomes is also scarce, limiting our understanding of how these differential effects occur.
In order to address these issues, I conducted a three-essay dissertation. In the first essay, I provide a comprehensive review of the POQ literature, including the definitions of POQ, theories in POQ research, and antecedents and outcomes of POQ. In addition, I review the methodological choices in POQ research. Finally, I propose several potential avenues for future POQ research.
In the second essay, I propose a theoretical model regarding the relationship between POQ and task performance drawing on transactional theory of stress, the challenge/hindrance stressor framework and social information processing theory. Specifically, I propose that POQ will influence task performance in two contrasting pathways. On the one hand, POQ will induce hindrance appraisal, which will lead to feelings of psychological entitlement, and thus decrease task performance. On the other hand, POQ will engender challenge appraisal, which will lead to elevated job self-efficacy, and thus increase task performance. I also expect supervisor justice rule adherence to moderate the hindrance pathway and leader humility to moderate the challenge pathway. To test these hypotheses, I collected multi-wave (3 time points) and multi-source (employees and supervisors) data from a sample of 291 employees with their 51 supervisors of a Chinese manufacturing company. I discuss the findings, strength and limitations and future directions of this study.
In the third essay, I propose a model to examine the relationship between POQ and OCB. Specifically, I propose that POQ will be positively related to OCB via job satisfaction for employees who have higher needs-supplies fit and who voluntarily took the job for which they are overqualified. The hypotheses are tested using the same sample as in Essay 2. I also discuss the theoretical contributions, limitations and future research directions, and practical implications.Essay 1. Perceived overqualification: a review and future research agendaEssay 2. Linking perceived overqualification and task performance: a dual-pathway framework and the role of leader behaviorsEssay 3. Linking perceived overqualification to organizational citizenship behaviors: the roles of job satisfaction, needs-supplies fit and voluntariness of taking the jo
Correction to: Linking core self-evaluation to creativity: the roles of knowledge sharing and work meaningfulness
No full textWe would like to note the following corrections to the original version of Zhang, Sun, Lin and Ren: In Table 2, ".21" should be ".21
Contribution to the Arabo-Saharan psammophilous Saprininae, with descriptions of two new species (Coleoptera, Histeridae, Saprininae, Hypocaccini)
No full textTwo new psammophilous Saprininae, Neopachylopus pharkidodes sp. nov. and N. penatii sp. nov. from the Arabian Peninsula and Algerian Sahara, respectively, are described and figured herein. Both are tentatively assigned to the genus Neopachylopus Reichardt, 1926, pending further studies. A key to species is given. The second known exemplar of the very rare Exaesiopus therondi Lackner, 2015 from the United Arab Emirates is reported and figured
Evaluation of Water—Energy—Food—Economy Coupling Efficiency Based on Three-Dimensional Network Data Envelopment Analysis Model
No full textIn the process of human survival and sustainable development, water security, energy security and food security have become the three most prominent issues, but they are interrelated and directly affect each other, that is, to form a Water–Energy–Food (WEF) nexus. Scientific understanding and correct response to the relationship between WEF is important to realize the sustainable development of natural resources. There are some deficiencies in the existing research on the input–output efficiency of WEF system. There are few articles that can study the efficiency relationship between internal and external factors (such as the economy and environment) of the WEF system at the same time, or the research is not perfect. In view of the shortcomings of the existing research, this paper establishes a three-dimensional network structure to describe the water–energy–food–economy (WEF-Eco) system and establishes the corresponding network Data Envelopment Analysis (DEA) model. We use the data of 19 provinces in Northeast, East, and central China to show the application results of this model
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