On the Comparison of Belief in the Silkworm God in China and Japan: focusing on the origin and the evolution

China, the world's largest sericulture country, has a long history of silk, which can be traced back to 7000 years ago. The early ancestors associated silkworms with sacrifice and used them to serve ghosts and gods. With the further increase in productivity, people began to domesticate silkworms and plant mulberry trees. During the Pre-Qin period (before 221 B.C. when the First Emperor of Qin united China), silk production has been throughout the middle and lower reaches of the Yellow River. Due to the prosperity of silkworm industry, the belief of silkworm god spread among the people and became a part of Chinese silkworm culture. Japan, a country close to China, has been raising silkworms for more than 1,700 years since the Yayoi Period (300 BC to 250 AD). After the opening of the Yokohama Port in 1859, sericulture developed rapidly and reached its peak in the 1930s, driven by the Meiji government's policy of "breeding silkworms to promote business". Along with the Chinese sericulture technology, the belief of sericulture god took root and sprouted in Japan. Meanwhile, Shinto and folk indigenous sericulture god belief also developed and has been passed on. By comparing the origin and evolution of sericulture belief in China and Japan, this paper explores the historical origins and respective characteristics of sericulture culture in China and Japan.この論文は未公刊の博士論文の一部である

日中養蚕文化に関する比較研究 : 保護と伝承を中心に

内容の要約博士(文学)Doctor of Philosophy広島大学Hiroshima Universit

Natural Rubber Farming in Guangdong Province in the Context of Supply-Side Reform: A Case Study of Shanwei Reclamation Area

The rubber industry in Shanwei Reclamation Area has grown into a leading industry in the reclamation area, but there are some problems in rubber plantations such as wind damage, neglect of supporting construction for shelter forest in the planting plan, and lack of rubber tappers. For the sustainable development of rubber farming, it is necessary to select the appropriate plot to plant rubber based on the habitat requirements of rubber trees; plan the supporting construction shelter forest network in cultivation of rubber trees; build organic rubber plantations, produce high-quality natural rubber and increase the output value of rubber plantations; use new tapping system to reduce tapping labor, improve tapping benefits and increase income of rubber tappers

Table_1_Benign gallbladder disease is a risk factor for colorectal cancer, but cholecystectomy is not: A propensity score matching analysis.xlsx

BackgroundPrevious studies reported controversial results on the relationship between cholecystectomy (CHE) and colorectal cancer (CRC). We hypothesized that gallbladder disease (GBD), instead of cholecystectomy, increased the risk of CRC. We aimed to investigate the incidence of benign gallbladder disease (BGBD) and CHE in CRC patients and local adults undergoing annual health examination by analyzing large data from a tertiary hospital in southwest China.MethodsA propensity score matching (PSM) analyzed, retrospective study from January 1, 2013, to August 31, 2020, including 7,471 pathologically confirmed CRC patients and 860,160 local annual health examination adults in the First Affiliated Hospital of Chongqing Medical University, was conducted. The prevalence of BGBD and the CHE rate were analyzed before and after a 1:1 PSM.ResultsOf the 7,471 CRC patients, 7,160 were eligible for the case group. In addition, 860,160 local health examination adults were included for comparison. The incidence of BGBD was higher in the CRC patients than in the local adults (19.2% vs. 11.3%, P ConclusionsBenign gallbladder disease was positively correlated with colorectal cancer, especially right colon cancer. Cholecystectomy did not increase the risk of colorectal cancer.</p

High responsivity graphene photodetectors from visible to near-infrared by photogating effect

Graphene photodetectors are highly attractive owing to its ultra-fast and wide-range spectral response from visible to infrared benefit from the superior carrier mobility and the linear dispersion with zero bandgap of graphene. The application of graphene photodetectors however is seriously limited by the low intrinsic responsivity in the order of ∼10 mA/W. Here, we demonstrate photogating field-effect transistors based on pure monolayer graphene with simple device structures. The light absorption in the heavily n-doped silicon/silicon oxide (Si/SiO2) substrate generates an additional photovoltage that effectively modulates the conductance of graphene, leading to room temperature graphene photodetectors with high responsivity of ∼500 A/W for 450 nm light and ∼4 A/W for 1064 nm light, respectively. The generated photocurrent changes with applied gate voltage and shows a strongly nonlinear power dependence. Meanwhile, the photoresponse of graphene exhibits a cut-off wavelength of ∼1100 nm, confirming the dominance photogating effect caused by light absorption in Si/SiO2 substrate. Considering the great compatibility of graphene to Si technology, our result paves a way for high-performance chip-integrated photodetectors

Peritoneal metastasis after emergency hepatectomy and delayed hepatectomy for spontaneous rupture of hepatocellular carcinoma

Summary: Background and objectives: Delayed hepatectomy is the preferred approach for spontaneous rupture of resectable hepatocellular carcinoma (HCC). However, delayed surgery for ruptured HCC may increase the risk of peritoneal metastasis. Methods: A retrospective analysis was conducted on the pooled data obtained from 44 HCC patients with spontaneously ruptured hemorrhage, These patients were divided into emergency group and delayed group. Perioperative events, overall survival (OS) and disease-free survival (DFS) rates, and the incidence of recurrent and metastatic disease were compared between these two groups. Results: Median survival time was 17.0 months in the emergency group vs. 28.0 months in the delayed group. In the emergency group, the 6-month, 1-year and 3-year OS rates were 58.8%, 57.6% and 11.5%. In the delayed hepatectomy group, the 6-month, 1-year and 3-year OS rates of were 84.3%, 77.5% and 37.8%. The incidence of peritoneal metastasis was higher in delayed group than in the emergency group, but the difference was not statistically significant (40.7% vs. 35.3%, P > 0.05). Conclusion: Delayed hepatectomy warrants better short-term prognosis, compared with emergency hepatectomy, for HCC patients with spontaneously ruptured hemorrhage. Delayed hepatectomy does not increase the possibility of postoperative peritoneal metastasis. Keywords: Peritoneal metastasis, Delayed hepatectomy, Emergency hepatectomy, Hepatocellular carcinoma, Spontaneous ruptur