Section 337 of the Tariff Act of 1930 and Its Impacts on China

337 of the Tariff Act of 1930 (“Section 337”) is one of the statutes that prohibit unfair trade or unfair competition in importation, and it aims at protecting intellectual property at the United States borders. Because of the international impacts of Section 337 and the injunctive nature of its remedies, the application of the statute has profound impacts on the trade between U.S. and other countries. China is a country that has enormous trade with the U.S and imports large amounts of goods to the U.S. each year. Moreover, the weak intellectual property protection in China has been a serious concern for U.S. companies and governments, thus Section 337 becomes an important tool for those companies to block Chinese products which allegedly infringe U.S. intellectual property, especially patent rights. This Article will discuss Section 337 and its impacts on patents in China. Part I provides an overview of Section 337, which describes its primary goal, mechanisms, and several distinctive features, such as the expedited proceeding and injunctive remedies. Part II discusses the possibility of bias for ITC in its Section 337 investigations. Relevant data will be provided for the discussion. Part III gives a brief introduction of patent system in China. Part IV discusses the recent “patent boom” in China and discusses whether the high patent quantity leads to high patent quality in China. Part V offers some suggestions to China in responding to Section 337 investigations initiated by the U.S

Dual roles of anesthetics in postoperative cognitive dysfunction: Regulation of microglial activation through inflammatory signaling pathways

Postoperative cognitive dysfunction (POCD) is a prevalent clinical entity following surgery and is characterized by declined neurocognitive function. Neuroinflammation mediated by microglia is the essential mechanism of POCD. Anesthetics are thought to be a major contributor to the development of POCD, as they promote microglial activation and induce neuroinflammation. However, this claim remains controversial. Anesthetics can exert both anti- and pro-inflammatory effects by modulating microglial activation, suggesting that anesthetics may play dual roles in the pathogenesis of POCD. Here, we review the mechanisms by which the commonly used anesthetics regulate microglial activation via inflammatory signaling pathways, showing both anti- and pro-inflammatory properties of anesthetics, and indicating how perioperative administration of anesthetics might either relieve or worsen POCD development. The potential for anesthetics to enhance cognitive performance based on their anti-inflammatory properties is further discussed, emphasizing that the beneficial effects of anesthetics vary depending on dose, exposure time, and patients’ characteristics. To minimize the incidence of POCD, we recommend considering these factors to select appropriate anesthetics

PF-DMD: Physics-fusion dynamic mode decomposition for accurate and robust forecasting of dynamical systems with imperfect data and physics

The DMD (Dynamic Mode Decomposition) method has attracted widespread attention as a representative modal-decomposition method and can build a predictive model. However, the DMD may give predicted results that deviate from physical reality in some scenarios, such as dealing with translation problems or noisy data. Therefore, this paper proposes a physics-fusion dynamic mode decomposition (PFDMD) method to address this issue. The proposed PFDMD method first obtains a data-driven model using DMD, then calculates the residual of the physical equations, and finally corrects the predicted results using Kalman filtering and gain coefficients. In this way, the PFDMD method can integrate the physics-informed equations with the data-driven model generated by DMD. Numerical experiments are conducted using the PFDMD, including the Allen-Cahn, advection-diffusion, and Burgers' equations. The results demonstrate that the proposed PFDMD method can significantly reduce the reconstruction and prediction errors by incorporating physics-informed equations, making it usable for translation and shock problems where the standard DMD method has failed

Design and assessment of a core-power controller for lithium-cooled space nuclear reactor based on the concept of fuzzy model predictive control

Thanks to its unique characteristics of high power-to-mass ratio, shallow reactivity poisoning, and quick response to reactivity control, power supply system based on lithium-cooled space nuclear reactor is preferred for various exploration missions into outer and deep space. However, due to its nature of few-people or even unmanned on-duty, an intelligent autonomous control of the reactor system, especially an accurate control of the reactor core power following the demanding power output, is of vital importance for such a space nuclear reactor. In this study, a core-power controller for a megawatt ultra-small lithium-cooled space nuclear reactor was designed based on the concept of fuzzy model predictive control (FMPC) combining model predictive control and T-S fuzzy theory. Performance of the FMPC controller was simulated and assessed with the Simulink platform for five typical operation transients including ramp, step and disturbance transient. The results show that the intelligent FMPC controller possesses an excellent load-following ability and anti-interference ability, both of which are of vital importance for space exploration missions. When compared with the classical PID controller, the FMPC controller designed in this study shows also a much better performance with smaller overshoot, lesser adjusting time and lower integral time-squared error

Quality assessment of global obstructive sleep apnea guidelines

Objective·To evaluate the quality of clinical practice guidelines of obstructive sleep apnea (OSA) published worldwide.Methods·The guidelines of OSA were retrieved in PubMed, Embase, China National Knowledge Infrastructure (CNKI), Wanfang Data, SinoMed, MedSci, The Cochrane Library, and the websites such as Medlive, U. S. Preventive Services Task Force (USPSTF), National Institute for Health and Care Excellence (NICE), New Zealand Guidelines Group (NZGG), Scottish Intercollegiate Guidelines Network (SIGN), and Guidelines International Network (GIN) from establishment to December 2022. Two reviewers screened the literature and extracted the main information independently, using the Appraisal of Guidelines for Research and Evaluation Ⅱ (AGREE Ⅱ) and Reporting Items for Practice Guidelines in Healthcare (RIGHT) to evaluate the quality of the included OSA guidelines. Subgroup analysis was performed according to the publication regions of guidelines. The inter-evaluator consistency test was also performed and the results were expressed as the intra-class correlation coefficient (ICC). All the included guidelines were read entirely and the clinical questions they raised were summarized.Results·A total of 35 OSA guidelines were included. The ICC value of 0.975 showed a good inter-evaluator agreement. The results of AGREE Ⅱ showed that the average score of all guidelines was (63.60±16.45)%, with a minimum of 23.40% and a maximum of 91.67%. In the six domains, the scores of "Rigor of development" [(56.07±25.89)%] and "Applicability" [(53.57±15.52)%] were relative low. The average reporting rate of RIGHT of all the included guidelines was (67.84±20.03)%, with a minimum of 14.29% and a maximum of 94.29%, and the three domains with the lowest reporting rates were "Review and quality assurance" [(31.40±45.51)%], "Funding and conflict of interest declaration and management" [(56.43±33.95)%] and "Other aspects" [(56.19±36.85)%]. Subgroup analysis showed that guidelines in Asian had a lower score in "Rigor of development" and a lower overall score of AGREE Ⅱ than the guidelines in America and Europe (both P<0.05), and the reporting rates in the domains of "Evidence" and "Other information" of RIGHT of the Asian guidelines were also lower than those in the guidelines in America and Europe (P<0.05). These guidelines focused on 42 clinical questions which were classified to 3 aspects, i.e. screening and diagnosis, treatment and long-term management of OSA.Conclusion·The quality of current global OSA guidelines varies a lot, and they need to be strengthened in terms of rigor of development, applicability, review and quality assurance, funding and conflict of interest declaration and management, especially those in Asia

Long-term intake of gluten and cognitive function among US women

Importance: Gluten avoidance has been suggested as having a benefit to cognitive health among the general population, given the link between gluten and cognitive impairment in patients with celiac disease. However, data are lacking in individuals without celiac disease. Objective: To examine whether gluten intake is associated with cognitive function in women without celiac disease. Design, Setting, and Participants: This cohort study included US women who participated in the longitudinal, population-based Nurses\u27 Health Study II and had not previously or subsequently been diagnosed with celiac disease. Dietary data were collected from 1991 to 2015, and data on cognitive function were collected from 2014 to 2019. Data analysis was conducted from October 2020 to April 2021. Exposures: Energy-adjusted gluten intake, cumulatively averaged across questionnaire cycles prior to cognitive assessment. Main Outcomes and Measures: Three standardized cognitive scores assessed by the validated Cogstate Brief Battery: (1) psychomotor speed and attention score, (2) learning and working memory score, and (3) global cognition score. Higher scores indicated better performance. Results: The cohort included 13 494 women (mean [SD] age, 60.6 [4.6] years). The mean (SD) gluten intake was 6.3 (1.6) g/d. After controlling for demographic and lifestyle risk factors in linear regression, no significant differences in standardized cognitive scores (mean [SD], 0 [1]) by quintile of gluten intake were found across highest and lowest quintiles of gluten intake (psychomotor speed and attention: -0.02; 95% CI, -0.07 to 0.03; P for trend = .22; learning and working memory: 0.02; 95% CI, -0.03 to 0.07; P for trend = .30; global cognition: -0.002; 95% CI, -0.05 to 0.05; P for trend = .78). The null associations persisted after additional adjustment for major sources of dietary gluten (ie, refined grains or whole grains), comparing decile categories of gluten intake, using gluten intake updated at each previous questionnaire cycle, or modeling changes in gluten intake. Similarly, these associations were not materially altered in sensitivity analyses that excluded women who had reported cancer or dementia diagnosis or had not completed all dietary assessments. Conclusions and Relevance: In this study, long-term gluten intake was not associated with cognitive scores in middle-aged women without celiac disease. Our results do not support recommendations to restrict dietary gluten to maintain cognitive function in the absence of celiac disease or established gluten sensitivity

Pressure-induced charge orders and their postulated coupling to magnetism in hexagonal multiferroic LuFe\u3csub\u3e2\u3c/sub\u3eO\u3csub\u3e4\u3c/sub\u3e

Hexagonal LuFe2O4 is a promising charge order (CO) driven multiferroic material with high charge and spin-ordering temperatures. The coexisting charge and spin orders on Fe3+/Fe2+ sites result in magnetoelectric behaviors, but the coupling mechanism between the charge and spin orders remains elusive. Here, by tuning external pressure, we reveal three charge-ordered phases with suggested correlation to magnetic orders in LuFe2O4: (i) a centrosymmetric incommensurate three-dimensional CO with ferrimagnetism, (ii) a non-centrosymmetric incommensurate quasi-two-dimensional CO with ferrimagnetism, and (iii) a centrosymmetric commensurate CO with antiferromagnetism. Experimental in situ single-crystal X-ray diffraction and X-ray magnetic circular dichroism measurements combined with density functional theory calculations suggest that the charge density redistribution caused by pressure-induced compression in the frustrated double-layer [Fe2O4] cluster is responsible for the correlated spin-charge phase transitions. The pressure-enhanced effective Coulomb interactions among Fe-Fe bonds drive the frustrated (1/3, 1/3) CO to a less frustrated (1/4, 1/4) CO, which induces the ferrimagnetic to antiferromagnetic transition. Our results not only elucidate the coupling mechanism among charge, spin, and lattice degrees of freedom in LuFe2O4, but also provide a new way to tune the spin-charge orders in a highly controlled manner

The Sulfur Microbial Diet Is Associated With Increased Risk of Early-Onset Colorectal Cancer Precursors

Background & Aims: Diet may contribute to the increasing incidence of colorectal cancer (CRC) before age 50 (early-onset CRC). Microbial metabolism of dietary sulfur produces hydrogen sulfide (H2S), a gastrointestinal carcinogen that cannot be easily measured at scale. As a result, evidence supporting its role in early neoplasia is lacking. Methods: We evaluated long-term adherence to the sulfur microbial diet, a dietary index defined a priori based on increased abundance of 43 bacterial species involved with sulfur metabolism, with risk of CRC precursors among 59,013 individuals who underwent lower endoscopy in the Nurses’ Health Study II (1991–2015), a prospective cohort study with dietary assessment every 4 years through validated food frequency questionnaires and an assessment of dietary intake during adolescence in 1998. The sulfur microbial diet was characterized by intake high in processed meats, foods previously linked to CRC development, and low in mixed vegetables and legumes. Multivariable logistic regression for clustered data was used to estimate odds ratios (ORs) and 95% confidence intervals (CIs). Results: We documented 2911 cases of early-onset adenoma. After adjusting for established risk factors, higher sulfur microbial diet scores were associated with increased risk for early-onset adenomas (ORquartile [Q]4 vs Q1, 1.31; 95% CI, 1.10–1.56, Ptrend = .02), but not serrated lesions. Compared with the lowest, women in the highest quartile of sulfur microbial diet scores had significantly increased risk of early-onset adenomas with greater malignant potential (ORQ4 vs Q1, 1.65 for villous/tubulovillous histology; 95% CI, 1.12–2.43; Ptrend = .04). Similar trends for early-onset adenoma were observed based on diet consumed during adolescence. In contrast, no clear association for adenomas was identified after age 50. Conclusions: Our findings in a cohort of young women support a role for dietary interactions with gut sulfur-metabolizing bacteria in early-onset colorectal carcinogenesis, possibly beginning in adolescence. Includes Supplemental materials