1,181 research outputs found
Rola polityki szczytów emisji i neutralności węglowej w transformacji i modernizacji chińskiego sektora produkcyjnego: droga do zielonego, niskoemisyjnego i zrównoważonego rozwoju
The level of development within the manufacturing sector serves as a vital indicator of a nation's overall strength and international competitiveness. The implementation of the carbon peaking and carbon neutrality policies is instrumental in expediting the transformation and upgrading of manufacturing industries. This paper investigates the effects and underlying mechanisms of this policy on the manufacturing sector's evolution, emphasizing green, low-carbon, and sustainable growth. Utilizing econometric methods such as progressive difference-in-difference, mediation, and moderation analysis, our empirical findings reveal several key insights: First, the positive coefficient associated with the carbon peaking and carbon neutrality policies indicates a significant stimulatory effect on the transformation and upgrading of manufacturing enterprises, a conclusion that persists through various robustness tests. Second, green technology innovation emerges as a vital mediating factor in this positive relationship, while the level of policy attention and the classification of enterprises as heavily polluting serve as influential moderating variables. This research contributes valuable insights for enhancing the implementation of carbon-related policies, fostering an experiential foundation for future initiatives, and guiding manufacturing enterprises in their pursuit of effective transformation and upgrading.Poziom rozwoju w sektorze wytwórczym jest istotnym wskaźnikiem ogólnej siły Chin i międzynarodowej konkurencyjności. Wdrożenie polityki szczytu emisji dwutlenku węgla i neutralności węglowej jest instrumentalne w przyspieszaniu transformacji i modernizacji przemysłu wytwórczego. W niniejszym artykule zbadano skutki i mechanizmy leżące u podstaw tej polityki w zakresie ewolucji sektora wytwórczego, kładąc nacisk na zielony, niskoemisyjny i zrównoważony rozwój. Wykorzystując metody ekonometryczne, takie jak progresywna analiza różnicy w różnicy, mediacja i moderacja, nasze ustalenia empiryczne ujawniają kilka kluczowych spostrzeżeń: Po pierwsze, dodatni współczynnik związany z polityką szczytu emisji dwutlenku węgla i neutralności węglowej wskazuje na znaczący efekt stymulujący na transformację i modernizację przedsiębiorstw wytwórczych, wniosek, który utrzymuje się w różnych testach solidności. Po drugie, innowacja w zakresie zielonych technologii wyłania się jako istotny czynnik pośredniczący w tej pozytywnej relacji, podczas gdy poziom uwagi polityki i klasyfikacja przedsiębiorstw jako silnie zanieczyszczających służą jako wpływowe zmienne moderujące. Badania te dostarczają cennych informacji na temat usprawnienia wdrażania polityk związanych z emisją dwutlenku węgla, tworzenia empirycznych podstaw dla przyszłych inicjatyw oraz udzielania wskazówek przedsiębiorstwom produkcyjnym w procesie skutecznej transformacji i modernizacji
Adherence to anti-tuberculosis treatment among pulmonary tuberculosis patients: a qualitative and quantitative study
BACKGROUND: Tuberculosis (TB) patients have difficulty following a long-term treatment regimen. Efforts to improve treatment outcomes require better understanding of adherence as a complex behavioral issue and of the particular barriers to and facilitators of patient adherence. METHODS: This study was carried out in Jiangsu Province of China with both quantitative and qualitative approaches. For the quantitative study, 780 sputum-smear positive TB patients consecutively registered since 2006 in 13 counties (districts) were queried with a structured questionnaire. Patients who had missed 10% of their total prescribed doses of TB drugs were deemed as non-adherent. Risks for non-adherence were estimated by computing odds ratios (ORs) and their 95% confidence intervals (95% CIs) using a logistic regression model. We also invited 20 TB patients and 10 local health workers for in-depth interviews. We then used content analysis based on this qualitative study to explore factors associated with non-adherence. RESULTS: The proportion of non-adherence among 670 patients was 12.2%. Univariate analysis showed that patients, who were illiterate, divorced/widowed, lacked health insurance and were migrants, were more likely to be non-adherent. The crude ORs(95%CIs) were 2.38(1.37-4.13), 2.42(1.30-4.52), 1.89(1.07-3.32) and 1.98(1.03-3.83), respectively. The risk of non-adherence was lower among patients whose treatment was given under direct observation by village doctors or regular home visits by health workers, with ORs (95% CIs) of 0.19(0.10-0.36) and 0.23(0.10-0.51), respectively. In multivariate analysis, factors associated with non-adherence included illiteracy (OR: 2.42; 95% CI: 1.25-4.67) and direct observation by village doctors (OR: 0.23; 95% CI: 0.11-0.45). The in-depth interviews indicated that financial burdens and extra medical expenditures, adverse drug reactions, and social stigma were additional potential factors accounted for non-adherence. CONCLUSION: More importance should be given to treatment adherence under the current TB control program. Heavy financial burdens, lack of social support, adverse drug reactions and personal factors are associated with non-adherence. Direct observation and regular home visits by health workers appear to reduce the risk of non-adherence. More patient-centered interventions and greater attention to structural barriers are needed to improve treatment adherence
Faktor-Faktor Yang Mempengaruhi Pengungkapan Tanggung Jawab Sosial
Penelitian ini bertujuan untuk menentukan faktor-faktor yang mempengaruhi luasnya tingkat pengungkapan tanggung jawab sosial Perusahaan (Corporate Social Responsibility) dengan menguji pengaruh ukuran Perusahaan, profitabilitas, leverage, kepemilikan institusional, ukuran dewan komisaris, ukuran dewan direksi, dan ukuran komite audit. Sampel yang digunakan adalah Perusahaan sektor pertambangan terdaftar di Bursa Efek Indonesia selama 2010-2012. Data diperoleh dari laporan keuangan auditan dan laporan tahunan serta laporan keberlanjutan (sustainability report) jika ada. Penelitian ini menggunakan pendekatan kuantitatif dengan analisis regresi linear berganda. Penelitian ini menunjukkan bahwa ukuran Perusahaan dan komite audit memiliki pengaruh positif terhadap pengungkapan tanggung jawab sosial. Tidak ditemukan bukti pengaruh profitabilitas, leverage, kepemilikan institusional, ukuran dewan komisaris, dan ukuran dewan direksi terhadap terhadap pengungkapan tanggung jawab sosial
Bibliometric analysis on the research of offshore wind power based on web of science
As renewable energy expands rapidly in installed capacity and in
built-over area, constructors and researchers are shifting their
sights from the lands to the seas. Offshore wind power (OWP), or
offshore wind farm, is a typical source of the renewable energy
constructed on the offshore islands or in the oceans. Since the
installed capacity of OWP has become booming since 2000, its
relevant researches also grow substantially. The objective of this
paper is to quantify the research works of OWP and to analyze
their focuses, main producers and high impact literature using
bibliometric method, where the OWP-related core literature in
recent 40 years are sorted out and a visualized analysis closely
concerned terms, contributors on national/regional basis, and
highly cited articles. The results show that researchers have been
largely followed on the grid-connection operations, the frameworks
and the ambient environment change of offshore wind
power. Moreover, the UK has taken the leading position on the
study of OWP at present
GWAS Identifies Novel Susceptibility Loci on 6p21.32 and 21q21.3 for Hepatocellular Carcinoma in Chronic Hepatitis B Virus Carriers
Genome-wide association studies (GWAS) have recently identified KIF1B as susceptibility locus for hepatitis B virus (HBV)–related hepatocellular carcinoma (HCC). To further identify novel susceptibility loci associated with HBV–related HCC and replicate the previously reported association, we performed a large three-stage GWAS in the Han Chinese population. 523,663 autosomal SNPs in 1,538 HBV–positive HCC patients and 1,465 chronic HBV carriers were genotyped for the discovery stage. Top candidate SNPs were genotyped in the initial validation samples of 2,112 HBV–positive HCC cases and 2,208 HBV carriers and then in the second validation samples of 1,021 cases and 1,491 HBV carriers. We discovered two novel associations at rs9272105 (HLA-DQA1/DRB1) on 6p21.32 (OR = 1.30, P = 1.13×) and rs455804 (GRIK1) on 21q21.3 (OR = 0.84, P = 1.86×), which were further replicated in the fourth independent sample of 1,298 cases and 1,026 controls (rs9272105: OR = 1.25, P = 1.71×; rs455804: OR = 0.84, P = 6.92×). We also revealed the associations of HLA-DRB1*0405 and 0901*0602, which could partially account for the association at rs9272105. The association at rs455804 implicates GRIK1 as a novel susceptibility gene for HBV–related HCC, suggesting the involvement of glutamate signaling in the development of HBV–related HCC
Genetic Variants of IDE-KIF11-HHEX at 10q23.33 Associated with Type 2 Diabetes Risk: A Fine-Mapping Study in Chinese Population
Background: Genome-wide association studies (GWAS) in populations of European ancestry have mapped a type 2 diabetes susceptibility region to chromosome 10q23.33 containing IDE, KIF11 and HHEX genes (IDE-KIF11-HHEX), which has also been replicated in Chinese populations. However, the functional relevance for genetic variants at this locus is still unclear. It is critical to systematically assess the relationship of genetic variants in this region with the risk of type 2 diabetes. Methodology/Principal Findings: A fine-mapping study was conducted by genotyping fourteen tagging single-nucleotide polymorphisms (SNPs) in a 290-kb linkage disequilibrium (LD) region using a two-stage case-control study of type 2 diabetes in a Chinese Han population. Suggestive associations (P,0.05) observed from 1,200 cases and 1,200 controls in the first stage were further replicated in 1,725 cases and 2,081 controls in the second stage. Seven tagging SNPs were consistently associated with type 2 diabetes in both stages (P,0.05), with combined odds ratios (ORs) ranging from 1.14 to 1.33 in the combined analysis. The most significant locus was rs7923837 [OR = 1.33, 95 % confidence interval (CI): 1.21–1.47] at the 39-flanking region of HHEX gene. SNP rs1111875 was found to be another partially independent locus (OR = 1.23, 95% CI: 1.13–1.35) in this region that was associated with type 2 diabetes risk. A cumulative effect of rs7923837 and rs1111875 was observed with individuals carrying 1, 2, and 3 or 4 risk alleles having a 1.27, 1.44, and 1.73-fold increased risk, respectively, for type 2 diabetes (P for trend = 4.1E-10)
Validation of the Oxford classification of IgA nephropathy for pediatric patients from China
BACKGROUND: The Oxford classification of IgA nephropathy (IgAN) provides a useful tool for prediction of renal prognosis. However, the application of this classification in children with IgAN needs validation in different patient populations. METHODS: A total of 218 children with IgAN from 7 renal centers in China were enrolled. The inclusion criteria was similar to the original Oxford study. RESULTS: There were 98 patients (45%) with mesangial proliferation (M1), 51 patients (23%) with endocapillary proliferation (E1), 136 patients (62%) with segmental sclerosis/adhesion lesion (S1), 13 patients (6%) with moderate tubulointerstitial fibrosis (T1 26-50% of cortex scarred), and only 2 patients (1%) with severe tubulointerstitial fibrosis (T2, >50% of cortex scarred). During a median follow-up duration of 56 months, 24 children (12.4%) developed ESRD or 50% decline in renal function. In univariate COX analysis, we found that tubular atrophy/interstitial fibrosis (HR 4.3, 95%CI 1.8-10.5, P < 0.001) and segmental glomerulosclerosis (HR 9.2 1.2-68.6, P = 0.03) were significant predictors of renal outcome. However, mesangial hypercellularity, endocapillary proliferation, crescents, and necrosis were not associated with renal prognosis. In the multivariate COX regression model, none of these pathologic lesions were shown to be independent risk factors of unfavorable renal outcome except for tubular atrophy/interstitial fibrosis (HR 2.9, 95%CI 1.0-7.9 P = 0.04). CONCLUSIONS: We confirmed tubular atrophy/interstitial fibrosis was the only feature independently associated with renal outcomes in Chinese children with IgAN
Evaluation of the Association between the AC3 Genetic Polymorphisms and Obesity in a Chinese Han Population
BackgroundAC3 is one of adenylyl cyclase isoforms involved in cAMP and insulin signaling pathway. Recent reports have demonstrated that the AC3 genetic polymorphisms are associated with obesity in a Swedish population. AC3 knock out mice exhibit obese when they age. These findings suggest that AC3 plays an important role in the regulation of body weight.Methodology/principal findingsIn the present study, we evaluated the association between the AC3 genetic polymorphisms and obesity in a Han Chinese population. A total of 2580 adults, including 1490 lean (BMI = 18.5-23.9), 677 overweight (BMI 24.0-27.9) and 413 obese (BMI ≥28.0) subjects were genotyped for 5 TagSNPs in the AC3 gene. Single maker association analyses indicated that SNP rs753529 was significantly associated with BMI in obese subjects (P = 0.022, OR = 0.775 95%CI = 0.623-0.963), but not in overweight subjects (P = 0.818). Multiple maker association analyses showed that the haplotype (G-G-G) constructed with SNPs rs1127568, rs7604576 and rs753529 was significantly associated with obesity (P = 0.029). Further genotyping of SNP rs753529 in 816 children, including 361 overweight subjects (BMI>P(80)) and 455 controls (BMI = P(20-50)) were performed, and no significant association with BMI was found. All tests were adjusted for age, sex, physical activity index, household income and/or diet expenses.ConclusionsThe present study provides replication evidence that the AC3 genetic polymorphisms are associated with decreased risk of obesity among adults but not in children in a Chinese Han population. The data also suggest that the AC3 genetic effects on BMI may have interaction with the factors related to ageing and environment
Effects of Heat Input on Weld Microstructure and Properties in Keyhole TIG Welding of Invar 36 Alloy
Funding Information: This research was supported by the National Natural Science Foundation of China (No. 51805315), Zhejiang Key Project of Research and Development Plan (2019C01114 and 2021C01085), Jiangsu Province Science and Technology Achievement Transformation Fund (BA2020068). Funding Information: J.P.O. acknowledges funding by national funds from FCT—Fundação para a Ciência e a Tecnologia, I.P., in the scope of the projects LA/P/0037/2020, UIDP/50025/2020 and UIDB/50025/2020 of the Associate Laboratory Institute of Nanostructures, Nanomodelling and Nanofabrication—i3N. J.S. acknowledges the China Scholarship Council for funding the Ph.D. grant (CSC NO. 201808320394). The authors acknowledge DESY (Hamburg, Germany), a member of the Helmholtz Association HGF, for the provision of experimental facilities. Beamtime was allocated for proposal I-20210899 EC. The research leading to this result has been supported by the project CALIPSOplus under the Grant Agreement 730872 from the EU Framework Programme for Research and Innovation HORIZON 2020. Publisher Copyright: © 2023 by the authors.The Invar alloy is widely used for aircraft wing mould manufacturing. In this work, keyhole-tungsten inert gas (K-TIG) butt welding was used to join 10 mm thick Invar 36 alloy plates. The effect of heat input on the microstructure, morphology and mechanical properties was studied by using scanning electron microscopy, high energy synchrotron X-ray diffraction, microhardness mapping, tensile and impact testing. It was shown that regardless of the selected heat input, the material was solely composed of austenite, although the grain size changed significantly. The change in heat input also led to texture changes in the fusion zone, as qualitatively determined with synchrotron radiation. With increases in heat input, the impact properties of the welded joints decreased. The coefficient of thermal expansion of the joints was measured, which demonstrated that the current process is suitable for aerospace applications.publishersversionpublishe
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