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Prevalence and outcomes of neonates with severe COVID-19:An observational study at Children’s Hospital 1 in Ho Chi Minh city,Vietnam

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Asian Pacific Journal of Tropical Medicine 2024年第9期17卷 392-399,I0001页

作者： Phung Nguyen The Nguyen Tran Thanh Thuc Nguyen Thanh Hung Ngo Ngoc Quang Minh Dang Quoc Duy Tran Minh Nhut Nguyen Hoang Dung Tran Nguyen Ai Nuong Dinh Nguyen Cam Tu Department of Pediatrics University of Medicine and Pharmacy at Ho Chi Minh cityHo Chi Minh CityVietnam Children’s Hospital 1 Ho Chi Minh CityVietnam Pediatric Department School of MedicineVietnam National University Ho Chi Minh CityVietnam

Objective:To evaluate the impact of the severe COVID-19 pandemic on neonates and develop strategies to improve their ***:We conducted an observational cross-sectional study at Children's Hospital 1(CH1)from July 25,2021,to May 31,*** neonates who had fever or respiratory symptoms or were born from mothers with COVID-19 and had a positive RT-PCR SARS-CoV-2 result would be *** classified neonates with COVID-19 into 2 groups:mild/moderate and severe for *** between groups were analyzed using Fisher's exact test/Chi-square test for categorical variables and student's t-test/Wilcoxon Rank Sum test for continuous ***:This study included 88 newborns who had positive RT-PCR SARS-CoV-2 *** severity COVID-19 rate among neonatal cases was found to be 13.6%(12/88),with a corresponding mortality rate of 1.1%(1/88).All severe cases showed lung abnormalities as evident on chest X-ray *** addition to respiratory symptoms,a higher incidence of gastrointestinal manifestations,such as vomiting and diarrhea,was observed in the severe group,indicating a compelling *** administration of anticoagulant and anti-inflammatory drugs in the study group resulted in a satisfactory outcome with no significant ***:The COVID-19 pandemic has had a substantial impact on the well-being of *** management of COVID-19 in this population presents significant challenges.

关键词： COVID-19 Neonate Anti-inflammatory Anticoagulant

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Low-loss and polarization insensitive 32×4 optical switch for ROADM applications

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Light(Science & Applications) 2024年第5期13卷 875-884页

作者： Xiaotian Zhu Xiang Wang Yanlu Huang Liyan Wu Chunfei Zhao Mingzhu Xiao Luyi Wang Roy Davidson Yanni Ou Brent E.Little Sai T.Chu Department of Physics City University of Hong KongTat Chee AvenueHong KongChina. QXP Technologies Inc. NO.15th Shanglinyuan 1st RoadXi’anShaanxi 710119China. state Key Laboratory of Information of Photonics and Optical Communications School of Electronic EngineeringBeijing University of Posts and TelecommunicationsBeijing 100876China

Integrated switches play a crucial role in the development of reconfigurable optical add-drop multiplexers(ROADMs)that have greater flexibility and compactness,ultimately leading to robust single-chip *** decades of research on switches with various structures and platforms,achieving a balance between dense integration,low insertion loss(IL),and polarization-dependent loss(PDL)remains a significant *** this paper,we propose and demonstrate a 32×4 optical switch using high-index doped silica glass(HDSG)for ROADM *** switch is designed to route any of the 32 inputs to the express ports or drop any channels from 32 inputs to the target 4 drop ports or add any of the 4 ports to any of the 32 express *** switch comprises 188 MachZehnder Interferometer(MZI)type switch elements,88 optical vias for the 44 optical bridges,and 618 waveguidewaveguide crossings with three-dimensional(3D)*** 1550 nm,the fiber-to-fiber loss for each express channel is below 2 dB,and across the C and L bands,below 3 *** each input channel to all 4 drop/add channels at 1550 nm,the loss is less than 3.5 dB and less than 5 dB across the C and L *** PDLs for all express and input channels to the 4 drop/add channels are below 0.3 dB over the C band,and the crosstalk is under−50 dB for both the C and L bands.

关键词： polarization ROADM optical

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Assessment of the Respiratory Disease Mortality Risk from Single and Composite Exposures to PM_(2.5)and Ozone—Guangzhou city,Guangdong Province,China,2018-2021

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China CDC weekly 2024年第34期6卷 857-861,I0001-I0006页

作者： Hongwei Tu Yijun Hu Keqi Hu Peipei Dong Yue Wen Jing Jiang Xuedan Xu Jinxu Huang Jiemin Zhu Changyun He Qiuxia Chen Yongying Liu Guangdong Provincial Center for Disease Control and Prevention Guangzhou CityGuangdong ProvinceChina Jinan University Guangzhou CityGuangdong ProvinceChina Department of Science and Education Guangdong Second Provincial General HospitalGuangzhou CityGuangdong ProvinceChina Sun Yat-sen University Guangzhou CityGuangdong ProvinceChina

Summary What is already known about this topic?Fine particulate matter(PM_(2.5))and ozone(O_(3))are prevalent pollutants in the atmosphere,which threaten human health,especially the respiratory ***,people are exposed to a mixture of various pollutants in the ***,the single and combined effects of both pollutants need to be investigated.

关键词： environment. ozone Guangdong

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Prognostic value of N-terminal pro B-type natriuretic peptide and troponin Ⅰ in children with dengue shock syndrome

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Asian Pacific Journal of Tropical Medicine 2024年第4期17卷 166-172页

作者： Truyen Phuoc Le Phung Nguyen The Nguyen University of Medicine and Pharmacy at Ho Chi Minh city Ho Chi Minh CityVietnam Children's Hospital 1 Ho Chi Minh CityVietnam

Objective:To investigate the contribution of N-terminal pro B-type natriuretic peptide(NT-pro BNP)and troponin Ⅰ to mortality in children with dengue shock ***:A longitudinal study was conducted on children with dengue shock syndrome in a hospital in southern *** clinical histories,physical examinations,and laboratory parameters,including NT-pro BNP and troponin Ⅰ,were recorded.A comparison between survival and non-survival was carried out to identify factors influencing ***:A total of 107 patients with a median age of 9 years were included in the *** them,63.6%(68/107)presented with compensated shock,36.4%(39/107)had hypotensive shock,23.4%(25/107)required mechanical ventilation,and 12.1%(13/107)*** NT-pro BNP levels were 3.9 pmol/L(IQR:1.9,10.3)and 15.2 pmol/L(5.8,46.3),while the median high sensitivity troponin Ⅰ levels were 20 pg/L(6,95)and 62 pg/L(12,325)at the first and second measurements,*** mortality group exhibited higher rates of hypotensive shock,prolonged shock,lactate levels,liver damage,NT-pro BNP,and troponin Ⅰ *** shock(OR 12.96,95%CI 2.70-62.30,P=0.004),prolonged shock(OR 39.40,95%CI 6.68-232.70,P1),Ast>1000 IU/L(OR 9.50,95%CI 2.63-34.34,P=0.041),and NT-pro BNP>7 pmol/L(OR 44.40,95%CI 5.44-362.20,P=0.001)were identified as predictive factors for mortality in dengue shock ***:The NT-pro BNP level could serve as a potential biomarker for predicting mortality in children with dengue shock syndrome.

关键词： Dengue shock syndrome Cardiac enzyme NT-pro BNP TroponinⅠ

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A Solution to the Famous “Twin’s Problem”

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Advances in Pure Mathematics 2019年第9期9卷 794-826页

作者： Prodromos Char. Papadopoulos the 1st gymnasium in yiannitsa city Yiannitsa Greece

In the following pages I will try to give a solution to this very known unsolved problem of theory of numbers. The solution is given here with an important analysis of the proof of formula (4.18), with the introduction of special intervals between square of prime numbers that I call silver intervals . And I make introduction of another also new mathematic phenomenon of logical proposition “In mathematics nothing happens without reason” for which I use the ancient Greek term “catholic information”. From the theorem of prime numbers we know that the expected multitude of prime numbers in an interval is given by formula ?considering that interval as a continuous distribution of real numbers that represents an elementary natural numbers interval. From that we find that in the elementary interval around of a natural number ν we easily get by dx=1 the probability that has the ν to be a prime number. From the last formula one can see that the second part of formula (4.18) is absolutely in agreement with the above theorem of prime numbers. But the benefit of the (4.18) is that this formula enables correct calculations in set N on finding the multitude of twin prime numbers, in contrary of the above logarithmic relation which is an approximation and must tend to be correct as ν tends to infinity. Using the relationship (4.18) we calculate here the multitude of twins in N, concluding that this multitude tends to infinite. But for the validity of the computation, the distribution of the primes in a random silver interval is examined, proving on the basis of catholic information that the density of primes in the same random silver interval is statistically constant. Below, in introduction, we will define this concept of “catholic information” stems of “information theory” [1] and it is defined to use only general forms in set N, because these represent the set N and not finite parts of it. This concept must be correlated to Riemann Hypothesis.

关键词： Twin Problem Twin’s Problem Unsolved Mathematical Problems Prime Number Problems Millennium Problems Riemann Hypothesis Rie-mann’s Hypothesis Number Theory Information Theory Probabilities statistics

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Technical efficiency of cocoa farms at varying elevation levels in Davao city, Philippines: implications to sustainable upland farming systems

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Journal of Mountain Science 2024年第1期21卷 33-48页

作者： Francis Levi A.DURANO Jon Marx SARMIENTO Larry N.DIGAL Pedro A.ALVIOLA IV School of Management University of the Philippines MindanaoDavao City 8000Philippines

Elevation is one of many components that influence agriculture, and this in turn affects the level of both inputs and outputs of farmers. This article focuses on the productivity and technical efficiency of 100 cocoa farms using cross-sectional data from areas ranging from 190 to 1021 m above sea level which were classified as low, medium, and high elevation in Davao city, considered as the chocolate capital of the Philippines. Using stochastic frontier analysis, the results showed that the cost of inputs per ha and the number of cocoa trees per ha significantly increase yield. Farms at high elevations were less technically efficient, as this entails lower temperatures and increased rainfall, and cocoa farming in those areas and conditions can be more challenging, especially with changes in farming practices, terrain, and distance to markets. Other significant variables were age of cocoa farms, married farmers, and age of the farmers. Older farms may be more developed, farmers who are married benefit from their spouses being able to readily contribute as farm labor, and lastly, older farmers' inefficiency may likely stem from nonadaptation of newer farming practices. With an average technical efficiency of 0.61, 0.63, and 0.26 in low, medium, and high elevation areas, respectively, farmers therefore have an incentive to improve farm practices and consider topographical variations found in high elevation areas. Recommendations for the improvement of technical efficiency of cocoa farms are better connectivity to markets, enhancing farm practices, and continuation and improvement of government programs on cocoa with an added emphasis on research. For farmers in high elevation areas, mitigating solutions such as sustainable agriculture practices and ecolabelling are key to improving efficiency and minimizing the potential negative impact on upland farming systems. Moreover, such adaptation measures may also contribute to sustainability of cocoa farming in high elevation

关键词： Cocoa farms Cobb-Douglas production function Elevation Philippines stochastic frontier analysis Technical efficiency

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Molecular Epidemiological study of a Human Brucellosis Outbreak—Weihai city,Shandong Province,China,2022

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China CDC weekly 2024年第12期6卷 230-234页

作者： Yan Li Yifan Yu Jian Zhao Shujun Ding Guoying Zhang Xiaolin Yu Zengqiang Kou Shandong Provincial Center for Disease Control and Prevention Jinan CityShandong ProvinceChina Shandong First Medical University Shandong Academy of Medical SciencesJinan CityShandong ProvinceChina Weihai Municipal Center for Disease Control and Prevention Weihai CityShandong ProvinceChina

What is already known about this topic?Brucellosis,mainly caused by Brucella melitensis(***),is regarded as a significant zoonotic disease in *** Weihai,located at the eastern end of the Shandong Peninsula,brucellosis has been in a low epidemic phase for the past five *** is added by this report?This was the initial report of a brucellosis outbreak in the last five *** of *** bv.3 from Weihai and other cities showed a close genetic relationship,suggesting a potential common *** are the implications for public health practice?Epidemiological investigations depend on standardized and effective molecular typing methods and analysis tools for public health laboratories to identify and trace *** the circulation patterns of livestock in free-range households in heavily affected areas is essential for controlling the spread of brucellosis.

关键词： Shandong China. break

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Antimicrobial Resistance Analysis and Whole-Genome Sequencing of Salmonella Isolates from Environmental Sewage — Guangzhou city, Guangdong Province, China, 2022–2023

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China CDC weekly 2024年第13期6卷 254-260页

作者： Bihui Su Guanghong Du Shuiping Hou Zongqiu Chen Xiaoying Wu Gang He Jun Yuan Chaojun Xie Tuberculosis Management and Treatment Department Guangzhou Chest HospitalGuangzhou CityGuangdong ProvinceChina School of Public Health Guangzhou Medical UniversityGuangzhou CityGuangdong ProvinceChina Guangzhou Center for Disease Control and Prevention Guangzhou CityGuangdong ProvinceChina Office of the Director Huadu District Center for Disease Control and PreventionGuangzhou CityGuangdong ProvinceChina

What is already known about this topic?S.1,4,[5],12:i:-and *** are emerging serotypes of Salmonella that require close monitoring for antimicrobial resistance and containment of their *** is added by this report?The study aimed to identify antimicrobial resistance genes(ARGs)in S.1,4,[5],12:i:-and *** strains isolated from environmental sewage in Guangzhou city,Guangdong Province,China.A phylogenetic tree was constructed using single nucleotide polymorphism data to assess genetic relatedness among strains,offering insights for Salmonella infection outbreak investigations in the *** are the implications for public health practice?It is crucial to implement strategies,such as integrating different networks,to control the spread of drugresistant *** technologies must be utilized to disinfect sewage and eliminate *** food safety and proper sewage disinfection are essential to curb the dissemination of Salmonella.

关键词： Whole offering integrating

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Facile electrochemical surface-alloying and etching of Au wires to enable high-performance substrates for surface enhanced Raman scattering

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Nano Materials Science 2024年第3期6卷 305-311页

作者： Yawen Zhan Guobin Zhang Junda Shen Binbin Zhou Chenghao Zhao Junmei Guo Ming Wen Zhilong Tan Lirong Zheng Jian Lu Yang Yang Li Center of Super-Diamond and Advanced Films(COSDAF) City University of Hong Kong83 Tat Chee AvenueKowloonHong KongChina Department of Materials Science and Engineering City University of Hong Kong83 Tat Chee AvenueKowloonHong KongChina Kunming Institute of Precious Metals Sino-platinum Metals Co.Ltd.KunmingYunan ProvinceChina Centre for Advanced structural Materials City University of Hong Kong Shenzhen Research Institute8 Yuexing 1st RoadShenzhen Hi-Tech Industrial ParkNanshan DistrictShenzhenChina Shenzhen Key Laboratory on Power Battery Safety Research and Shenzhen Geim Graphene Center Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen518055China Institute of High Energy Physics Beijing100049China

Surface-enhanced Raman Spectroscopy(SERS)is a nondestructive technique for rapid detection of analytes even at the single-molecule ***,highly sensitive and reliable SERS substrates are mostly fabricated with complex nanofabrication techniques,greatly restricting their practical applications.A convenient electrochemical method for transforming the surface of commercial gold wires/foils into silver-alloyed nanostructures is demonstrated in this *** substrates are treated with repetitive anodic and cathodic bias in an electrolyte of thiourea,in a one-pot one-step manner.X-rays absorption fine structure(XAFS)spectroscopy confirms that the AuAg alloy is induced at the *** unique AuAg alloyed surface nanostructures are particularly advantageous when served as SERS substrates,enabling a remarkably sensitive detection of Rhodamine B(a detection limit of 10^(-14)M,and uniform strong response throughout the substrates at 10^(-12)M).

关键词： Electrodeposition Dealloying Surface-alloyed Noble metals Surface enhanced Raman spectroscopy substrates

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The Combined Effects of High Temperatures and Ozone Pollution on Medical Emergency Calls—Jinan city,Shandong Province,China,2013–2019

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China CDC weekly 2024年第2期6卷 30-35,I0001-I0007页

作者： Huiyun Chang Chong Liu Xingyi Geng Xiumiao Peng Ke Huang Liheng Wang Liangliang Cui Department of Scientific Research and Education Jinan Municipal Center for Disease Control and PreventionJinan Municipal Center for Disease Control and Prevention Affiliated to Shandong UniversityJinan CityShandong ProvinceChina Jinan Health Well Development Center Jinan CityShandong ProvinceChina Department of Environmental Health Jinan Municipal Center for Disease Control and PreventionJinan CityShandong ProvinceChina Department of Emergency Jinan Medical Emergency CenterJinan CityShandong ProvinceChina

What is already known about this topic?studies have extensively documented the separate and independent effects of extreme temperature and ozone on morbidity and mortality associated with respiratory and circulatory *** is added by this report?The study revealed a significant association between elevated temperature,ozone pollution,and the combined effect of high temperature and ozone pollution with an increased risk of all-cause medical emergency calls(MECs)and MECs specifically related to neurological *** are the implications for public health practice?Interventional measures should be implemented to mitigate exposure to high temperatures and ozone ***,during the warm season,it is crucial for relevant authorities to focus on disseminating scientific information regarding the health impacts of elevated temperatures and ozone ***,timely public health advisories should be issued to alert the public effectively.

关键词： ozone elevated pollution

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