Comparative Study on the Governance of SetoNaikai in Japan to Bohai Sea

This paper explores Japan's successful experience in controlling SetoNaikai and discusses the enlightenment to China's governance of Bohai Sea. In 2006, the National Development and Reform Commission launched the “Bohai Sea Environmental Protection General Plan" and also announced the failure to implement the “Bohai Sea Clean Sea Action Plan" in the past five years. Similarly, there has been similar pollution in SetoNaikai of Japan. But after 10 years of treatment, it has been quite effective. Through the research methods of international cooperation and exchange, expert interviews and literature analysis, the current situation and existing problems of governance of Bohai Sea are mastered. This paper selects SetoNaikai as the research object, compares the environment and policies between China and Japan and constructs countermeasures and mechanisms of China's environmental governance of Bohai Sea

Comparative Study on the Governance of SetoNaikai in Japan to Bohai Sea

This paper explores Japan's successful experience in controlling SetoNaikai and discusses the enlightenment to China's governance of Bohai Sea. In 2006, the National Development and Reform Commission launched the “Bohai Sea Environmental Protection General Plan" and also announced the failure to implement the “Bohai Sea Clean Sea Action Plan" in the past five years. Similarly, there has been similar pollution in SetoNaikai of Japan. But after 10 years of treatment, it has been quite effective. Through the research methods of international cooperation and exchange, expert interviews and literature analysis, the current situation and existing problems of governance of Bohai Sea are mastered. This paper selects SetoNaikai as the research object, compares the environment and policies between China and Japan and constructs countermeasures and mechanisms of China's environmental governance of Bohai Sea

Comparative Pharmacokinetic Profiles of Puerarin in Rat Plasma by UHPLC-MS/MS after Oral Administration of Pueraria lobata Extract and Pure Puerarin

Puerarin is the main biologically active isoflavone in Pueraria lobata and has a wide range of biological activities. However, due to its poor water solubility and low oral bioavailability, its clinical applications are restricted. Compared with puerarin, the Pueraria lobata extract (PLE) has better water solubility, lower toxicity, and less side effects. In this study, the pharmacokinetics of orally administered puerarin (100 mg/kg) and PLE (763 mg/kg, equivalent to 100.0 mg/kg of puerarin) to rats was investigated by the UHPLC-MS/MS method. Results showed that when the rats were administered PLE, the area under the concentration-time curve from zero to infinity (AUC0-inf) dramatically increased from 219.83 ± 64.37 μg h/L to 462.62 ± 51.74 μg h/L (p<0.01). The elimination half-time (t1/2) also increased from 1.60 ± 0.38 h to 12.04 ± 5.10 h (p<0.01). The maximum concentration (Cmax) of puerarin decreased from 101.64 ± 41.82 ng/mL to 48.64 ± 21.47 ng/mL (p<0.01), and time to reach the maximum plasma concentration (Tmax) of puerarin decreased from 1.46 ± 1.08 h to 0.54 ± 0.30 h (p<0.01). Results indicated that the pharmacokinetics of puerarin in Pueraria lobata may be dramatically different from pure puerarin in the plasma of rat, and oral bioavailability of puerarin may be increased when PLE was administrated to rats

Label-Free LSPR-Vertical Microcavity Biosensor for On-Site SARS-CoV-2 Detection

Cost-effective, rapid, and sensitive detection of SARS-CoV-2, in high-throughput, is crucial in controlling the COVID-19 epidemic. In this study, we proposed a vertical microcavity and localized surface plasmon resonance hybrid biosensor for SARS-CoV-2 detection in artificial saliva and assessed its efficacy. The proposed biosensor monitors the valley shifts in the reflectance spectrum, as induced by changes in the refractive index within the proximity of the sensor surface. A low-cost and fast method was developed to form nanoporous gold (NPG) with different surface morphologies on the vertical microcavity wafer, followed by immobilization with the SARS-CoV-2 antibody for capturing the virus. Modeling and simulation were conducted to optimize the microcavity structure and the NPG parameters. Simulation results revealed that NPG-deposited sensors performed better in resonance quality and in sensitivity compared to gold-deposited and pure microcavity sensors. The experiment confirmed the effect of NPG surface morphology on the biosensor sensitivity as demonstrated by simulation. Pre-clinical validation revealed that 40% porosity led to the highest sensitivity for SARS-CoV-2 pseudovirus at 319 copies/mL in artificial saliva. The proposed automatic biosensing system delivered the results of 100 samples within 30 min, demonstrating its potential for on-site coronavirus detection with sufficient sensitivity

Quality Analysis and Evaluation of Shrimp paste in China

Shrimp paste, a traditional aquatic fermented product, is more prevalent in Southeast Asia and the coastal areas of China. The traditional shrimp paste production process is straightforward. Usually, small economic shrimp species, such as grasshopper and sesame shrimp, are used as raw materials. Microorganisms and a series of endogenous enzymes are relied upon to create a condiment with a distinct flavor and aroma via natural fermentation. The quality of shrimp paste is influenced by various factors, including the type of raw shrimp used, the freshness of raw materials, fermentation duration, fermentation temperature, salt addition, and storage time. There are several brands of shrimp paste in the market, but their quality varies significantly. There are no studies on the quality evaluation system for commercially available shrimp paste. In this study, a comprehensive evaluation of shrimp paste samples was conducted to investigate the quality differences among commercially available shrimp pastes. 32 brands of shrimp paste were collected from six provinces, namely Shandong, Guangdong, Hebei, Tianjin, Liaoning, and Jiangsu. The color and histomorphology of these samples were assessed via sensory evaluation, whereas their physicochemical indicators, such as moisture, salt, protein, and amino acid nitrogen, were determined. Principal component analysis was utilized to create a comprehensive ranking of 32 commercially available shrimp pastes. The results showed that the odor score of commercially available shrimp paste had the highest coefficient of variation value at 37.64%, indicating that the odor of different brands of shrimp paste varied significantly. The SC/T 3602-2016 "Shrimp paste" standard states that the moisture content of shrimp paste should be ≤ 60%, ash content should be ≤ 35%, salt content should be ≤ 25%, protein content should be ≥ 10.0 g/100 g, and amino acid nitrogen content should be ≥ 0.6 g/100 g. The minimum variation value for the moisture content of shrimp paste products was 12.17%, but the overall moisture content was high, with seven samples exceeding the standard limit by a significant margin. In the shrimp paste production process, with the extension of the fermentation time, the moisture content gradually reduced, and the water activity decreased. The high moisture content of individual samples could be related to the production process that shortens the fermentation cycle of shrimp paste. A total of 32 samples had ash content ≤ 35%, in accordance with the standard requirements of "shrimp paste". Fifty percent of commercially available shrimp paste samples had salt content values greater than 20%, indicating that most commercially available shrimp pastes were high in salt concentrations. Since a diet high in salt may lead to a series of health problems, such as increased blood pressure, reducing the salt content of traditional shrimp paste is more in line with modern consumer values. The protein content of 28 samples met the requirements, and the amino acid nitrogen content of 31 samples met the requirements. The maximum variation value of amino acid nitrogen content was 33.91%, indicating a large difference in amino acid nitrogen content between samples. The amino acid nitrogen content of 78.13% of the shrimp paste samples was greater than 1.0 g/100 g, and a few shrimp paste samples even exceeded 2.0 g/100 g, which was significantly higher than the amino acid nitrogen content of fish sauce and comparable to that of commercially available oyster sauce. Through principal component analysis, three principal components representing eight quality indicators of 32 commercially available shrimp pastes were extracted based on the principle of principal component eigenvalues greater than 1, and the cumulative variance contribution reached 82.32%, indicating that the majority of the information regarding shrimp paste quality indicators could be covered. Through further analysis, it was determined that moisture, amino acid nitrogen, and odor were important indicators affecting the overall quality of shrimp paste, and a comprehensive evaluation model was established as follows: Fsynthesize= 0.497F1 + 0.318F2 + 0.185F3, in order to investigate the differences in the odor composition of different shrimp pastes in greater detail. The samples were subjected to an e-nose analysis, and an e-nose clustering heat map was developed; the results showed that 32 shrimp sauces were clustered into four categories at a Euclidean distance of 4.03, with the main distinction lying in the W1S, W2S, and W3S sensors, and clustering occurred between the sea silver shrimp sauce and grasshopper shrimp sauce. Gas-ion mobility spectrometry (GC-IMS) analysis of shrimp paste derived from three raw materials (i.e., sea silver shrimp, grasshopper shrimp, and white shrimp) showed the presence of 63 volatile components, mainly different alcohols. The high content of alcohol contained in the flavor substances is consistent with the findings of several previous studies. The results indicated that the quality of commercially available shrimp paste differed significantly, with odor, moisture, and amino acid nitrogen being the most influential factors affecting quality. The results of the study provide a benchmark for the quality assessment and production process enhancement of shrimp paste

Comparison of Serum MicroRNA21 and Tumor Markers in Diagnosis of Early Non-Small Cell Lung Cancer

Objective. To compare the clinical value of serum microRNA21 (miR21) and other tumor markers in early diagnosis of non-small cell lung cancer (NSCLC). Methods. Serums carcinoembryonic antigen (CEA), cytokeratin 19 fragment (CYFRA21-1), neuron-specific enolase (NSE), and miR21 were detected in 50 NSCLC cases and 60 healthy control individuals. Results. Average serums miR21, CEA, NSE, and CYFRA21-1 levels were significantly higher in the case group than in control group (P<0.01). Analysis of areas under the receiver operating characteristic (ROC) curve (AUC) revealed that CEA had the highest diagnostic efficiency for NSCLC. Serums miR21 and CYFRA21-1 levels were significantly lower at TNM stages I-II than stages III-IV (P<0.05). Further, logistic multivariate regression analysis showed that the incidence of early NSCLC (TNM stages I-II) was correlated with serums CYFRA21-1 (OR = 1.076) and miR21 (OR = 2.473) levels (P<0.05). By AUC analysis, miR21 had the highest diagnostic efficiency for early NSCLC, and single or combined detection of serums CYFRA21-1 and miR21 levels showed improved diagnostic efficiency for joint detection of both markers. Conclusions. Serum miR21 could serve as an important marker for auxiliary diagnosis of early NSCLC, while joint detection of serums miR21 and CYFRA21-1 levels could improve diagnostic efficiency

Kaposi's sarcoma-associated herpesvirus (KSHV) vIL-6 promotes cell proliferation and migration by upregulating DNMT1 via STAT3 activation.

Kaposi's sarcoma-associated herpesvirus (KSHV) is etiologically associated with Kaposi's sarcoma (KS), the most common AIDS-related malignancy. KSHV vIL-6 promotes KS development, but the exact mechanisms remain unclear. Here, we reported that KSHV vIL-6 enhanced the expression of DNA methyltransferase 1 (DNMT1) in endothelial cells,increased the global genomic DNA methylation, and promoted cell proliferation and migration. And this effect could be blocked by the DNA methyltransferase inhibitor, 5-azadeoxycytidine. We also showed that vIL-6 induced up-regulation of DNMT1 was dependent on STAT3 activation. Therefore, the present study suggests that vIL-6 plays a role in KS tumorigenesis partly by activating DNMT1 and inducing aberrant DNA methylation, and it might be a potential target for KS therapy

High electron transfer of TiO₂ nanorod@carbon layer supported flower-like WS₂ nanosheets for triiodide electrocatalytic reduction

WS2-based nanomaterials have been extensively studied due to their unique catalytic properties. However, it is still a great challenge to prepare WS2-based electrocatalysts with both maximally active edge sites exposure and high electronic conductivity. In this work, we have engineered a 1D-2D multidimensional nanostructured TiO2 nanorod@carbon layer supported flower-like WS2 nanosheets (TNRs@C@WS2) electrocatalyst with abundant exposed active edge sites as well as high electron transfer abilities. The TNRs@C@WS2 was explored as a good catalyst for the triiodide reduction reaction. The assembled dye-sensitized solar cell achieves a high photoelectric conversion efficiency (7.15%) and comparable to that (7.18%) of Pt. This unique 1D-2D multidimensional nanostructure may open up new opportunities for a variety of applications in clean energy and catalysis.This work was financially supported by the Natural Science Foundation of China (61774033, 52002038), the Natural Science Foundation of Jiangsu (BK20170661), and the Science and Technology Project of Changzhou (CJ20200037). This work was also supported by the Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, East China Normal University