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Journal of Integrative Agriculture 2024年第1期23卷 298-309页

作者： Phiraiwan Jermwongruttanachai Siwalak Pathaveerat Sirinad Noypitak Department of Agricultural Engineering Faculty of Engineering at Kamphaeng SaenKasetsart UniversityKamphaeng Saen CampusNakhon Pathom 73140Thailand

The adulteration concentration of palm kernel oil(PKO)in virgin coconut oil(VCO)was quantified using near-infrared(NIR)hyperspectral imaging.Nowadays,some VCO is adulterated with lower-priced PKO to reduce production costs,which diminishes the quality of the VCO.This study used NIR hyperspectral imaging in the wavelength region 900-1,650 nm to create a quantitative model for the detection of PKO contaminants(0-100%)in VCO and to develop predictive mapping.The prediction equation for the adulteration of VCO with PKO was constructed using the partial least squares regression method.The best predictive model was pre-processed using the standard normal variate method,and the coefficient of determination of prediction was 0.991,the root mean square error of prediction was 2.93%,and the residual prediction deviation was 10.37.The results showed that this model could be applied for quantifying the adulteration concentration of PKO in VCO.The prediction adulteration concentration mapping of VCO with PKO was created from a calibration model that showed the color level according to the adulteration concentration in the range of 0-100%.NIR hyperspectral imaging could be clearly used to quantify the adulteration of VCO with a color level map that provides a quick,accurate,and non-destructive detection method.

关键词： virgin coconut oil adulteration contamination palm kernel oil hyperspectral imaging

Radio-protective effect of vitamin E on spermatogenesis in mice exposed to γ-irradiation: a flow cytometric study

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Asian Journal of Andrology 2004年第4期6卷 331-336页

作者： C.Songthaveesin J.Saikhun Y.Kitiyanant K.Pavasuthipaisit Department of Radiology Institute of Science and Technology for Research and DevelopmentInstitute of Science and Technology for Research and DevelopmentInstitute of Science and Technology for Research and Development Faculty of Medicine Ramathibodi Hospital Mahidol University Bangkok 10400 Thailand Mahidol University Salaya Nakhon Pathom 73170 Thailand Mahidol University Salaya Nakhon Pathom 73170 Thailand Department of Anatomy Faculty of Science Mahidol University Rama VI Road Bangkok 10400 Thailand Mahidol University Salaya Nakhon Pathom 73170 Thailand Department of Anatomy Faculty of Science Mahidol University Rama VI Road Bangkok 10400 Thailand

Aim: To investigate the effect of vitamin E on the radioprotection of spermatogenesis and chromatin condensation of spermatozoa during passage through the epididymis in mice exposed to irradiation. Methods: Adult outbred male ICR mice were orally administered natural vitamin E (VE, D-α-tocopheryl acetate) at 400 IU/kg for 7 days before exposure to 1 Gy of γ-irradiation. The animals were sacrificed at day 1, 7, 14, 21, 28, 35 and 70 post-irradiation (IR) and the percentage of testicular germ cells and epididymal sperm chromatin condensation was analyzed using flow cytometry. Results: Serum D-α-tocopheryl acetate levels were 47.4 ± 3.2 μg/dL in the treated group, yet it could not be detected in the control group. The testicular weight of irradiated mice pretreated with VE+IR was significantly (P<0.05) higher than that of those without VE treatment (IR) at day 14 and 21 post-irradiation. The percentage of primary spermatocytes (4C) in the VE+IR group was comparable to the controls but significantly (P<0.05) higher than those in the IR group from day 7 to 35 post-irradiation. The percentage of round spermatids (1C) in the VE+IR group was also significantly (P<0.05) higher than those in the IR group at day 28 post-irradiation. The primary spermatocytes : spermatogonia ratio in the IR group was significantly (P<0.05) declined at day 7 to 35 post-irradiation when compared to the VE+IR and control groups. The round spermatid : spermatogonia ratio in the VE+IR group was significantly (P<0.05) higher than that of the IR group at day 14 and 28 post-irradiation. The chromatin condensation of epididymal spermatozoa measured by propidium iodide uptake was not affected by 1 Gy of γ-irradiation. Conclusion: The administration of VE prior to irradiation protects spermatogenic cells from radiation.

关键词： vitamin E radioprotection spermatogenesis mouse flow cytometry

Hierarchical cobalt-molybdenum layered double hydroxide arrays power efficient oxygen evolution reaction

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Nano Research 2024年第6期17卷 5080-5086页

作者： Xinyi Zhu Jiahui Lyu Shanshan Wang Xingchuan Li Xiaoyu Wei Cheng Chen Wanida Kooamornpattana Francis Verpoort Jinsong Wu Zongkui Kou State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Sanya Science and Education Innovation Park of Wuhan University of Technology Sanya 572000China Nanostructure Research Center Wuhan University of TechnologyWuhan 430070China Department of Chemical Engineering Faculty of EngineeringMahidol UniversityNakhon Pathom 73170Thailand

Transition metal-based layered double hydroxides(LDHs)have been capable of working efficiently as catalysts in the basic oxygen evolution reaction(OER)for sustaining hydrogen production of alkaline water electrolysis.Nevertheless,exploring new LDH-based electrocatalysts featuring both remarkable activity and good stability is still in high demand,which is pivotal for comprehensive understanding and impressive improvement of the sluggish OER kinetics.Here,a series of bimetallic(Co and Mo)LDH arrays were designed and fabricated via a facile and controlled strategy by incorporating a Mo source into presynthesized Co-based metal-organic framework(MOF)arrays on carbon cloth(CC),named as ZIF-67/CC arrays.We found that tuning the Mo content resulted in gradual differences in the structural properties,surface morphology,and chemical states of the resulting catalysts,namely CoMox-LDH/CC(x representing the added weight of the Mo source).Gratifyingly,the best-performing CoMo_(0.20)-LDH/CC electrocatalyst demonstrates a low overpotential of only 226 mV and high stability at a current density of 10 mA·cm^(−2),which is superior to most LDH-based OER catalysts reported previously.Furthermore,it only required 1.611 V voltage to drive the overall water splitting device at the current density of 10 mA·cm^(−2).The present study represents a significant advancement in the development and applications of new OER catalysts.

关键词： layered double hydroxides(LDHs) metal-organic frameworks(MOFs) array catalysts Mo modification electrocatalytic oxygen evolution reaction(OER)

Betalains protect various body organs through antioxidant and anti-inflammatory pathways

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Food Science and Human Wellness 2024年第3期13卷 1109-1117页

作者： Nilesh Prakash Nirmal Seema Medhe Merina Dahal Pankaj Koirala Siriwan Nirmal Fahad Al-Asmari Baojun Xu Institute of Nutrition Mahidol UniversityNakhon Pathom 73170Thailand Department of Nutrition and Dietetics Central Campus of TechnologyTribhuvan UniversityKathmandu 46000Nepal Department of Adult Nursing Faculty of NursingBurapha UniversityChonburi 20131Thailand Department of Food Science and Nutrition College of Agriculture and Food SciencesKing Faisal UniversityAl-Ahsa 31982Saudi Arabia Food Science and Technology Program Department of Life SciencesBNU-HKBU United International CollegeZhuhai 519088China

Betalains are natural coloring pigments with betalamic acid as the core structure of all subclasses.Besides their coloring properties,betalains exhibit various biological activities,including antioxidant and anti-inflammatory properties,which are highly imperative.Further in-vivo studies reported that betalains protect various body organs,leading to health enhancement.Body organs,including the heart,liver,kidney,lung,etc.,are important for a healthy life.However,these organs can be affected or damaged by various stress factors,toxicants,and harmful substances.Recent studies have claimed that betalains could protect all vital organs of the body through antioxidant and anti-inflammatory mechanisms.This review article described the in-vivo antioxidant and anti-inflammatory activities of betalains in various cell-line or animal models.A comprehensive discussion has been provided on the mechanism of action of betalains in protecting various body organs,including cardio-protective effect,hepato-protective ability,renal protection capacity,repro-protective ability,neuro-protective effect,lung protection,and gut protection ability.Finally,future research directions and conclusions have been outlined.

关键词： Betalains Antioxidant Anti-inflammatory Bioactivities Ogans-protection

Validity,Reliability,and Measurement Invariance of the Thai Smartphone Application-Based Addiction Scale and Bergen Social Media Addiction Scale

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International Journal of Mental Health Promotion 2024年第4期26卷 293-302页

作者： Kamolthip Ruckwongpatr Chirawat Paratthakonkun Usanut Sangtongdee Iqbal Pramukti Ira Nurmala Kanokwan Angkasith Weena Thanachaisakul Jatuphum Ketchatturat Mark DGriffiths Yi-Kai Kao Chung-Ying Lin Institute of Allied Health Sciences College of MedicineNational Cheng Kung UniversityTainan701401Taiwan College of Sports Science and Technology Mahidol UniversityNakhon Pathom73170Thailand Department of Forensic Science Royal Police Cadet AcademyNakhon Pathom73110Thailand School of Computing Engineeringand Digital TechnologyTeesside UniversityMiddlesbroughUK Faculty of Nursing Universitas PadjadjaranWest Java45363Indonesia Division of Health Promotion and Behavioral Sciences Faculty of Public HealthUniversitas AirlanggaSurabaya60115Indonesia Faculty of Education Chiang Mai UniversityChiang Mai50200Thailand Faculty of Education Khon Kaen UniversityKhon Kaen40002Thailand International Gaming Research Unit Psychology DepartmentNottingham Trent UniversityNottinghamNG14FQUK Division of Colorectal Surgery E-DA HospitalKaohsiung82445Taiwan College of Medicine National Cheng Kung UniversityTainan701401Taiwan Biostatistics Consulting Center National Cheng Kung University HospitalTainan701401Taiwan

Background:In recent years,there has been increased research interest in both smartphone addiction and social media addiction as well as the development of psychometric instruments to assess these constructs.However,there is a lack of psychometric evaluation for instruments assessing smartphone addiction and social media addiction in Thailand.The present study evaluated the psychometric properties and gender measurement invariance of the Thai version of the Smartphone Application-Based Addiction Scale(SABAS)and Bergen Social Media Addiction Scale(BSMAS).Method:A total of 801 Thai university students participated in an online survey from January 2022 to July 2022 which included demographic information,SABAS,BSMAS,and the Internet Gaming Disorder Scale-Short Form(IGDS9-SF).Results:Confirmatory Factor Analyses(CFAs)found that both the SABAS and BSMAS had a one-factor structure.Findings demonstrated adequate psychometric properties of both instruments and also supported measurement invariance across genders.Moreover,scores on the SABAS and BSMAS were correlated with scores on the IGDS9-SF.Conclusion:The results indicated that the SABAS and BSMAS are useful psychometric instruments for assessing the risk of smartphone addiction and social media addiction among Thai young adults.

关键词： Factor analysis smartphone addiction social media addiction smartphone application-based addiction scale bergen social media addiction scale psychometric validation

Recovery shape of physical activity after COVID-19 pandemic

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运动与健康科学(英文) 2023年第4期12卷 501-512页

作者： Piyawat Katewongsa Dyah Anantalia Widyastari Narumol Haemathulin Aunyarat Khanawapee Surasak Penmai Institute for Population and Social Research Mahidol UniversitySalayaPhutthamonthonNakhon Pathom 73170Thailand Thailand Physical Activity Knowledge Development Centre(TPAK) SalayaPhutthamonthonNakhon Pathom 73170Thailand

Background:Since shutdowns associated with the coronavirus disease 2019 pandemic,there has been limited discourse on physical activity(PA)recovery(i.e.,the ability of individuals to resume PA at pre-pandemic levels),including recovery rate,speed of recovery,which individuals are able to return quickly,who is left behind,and what are the causes of those differences.This study aimed to estimate the level and shape of PA recovery rate in Thailand.Methods:This study employed 2 rounds(2020 and 2021)of Thailand's Surveillance on Physical Activity dataset for the analysis.Each round included over 6600 samples from individuals aged 18 years or older.PA was assessed subjectively.Recovery rate was calculated from the relative difference in the cumulative minutes of moderate-to-vigorous PA(MVPA)from 2 different periods.Results:The Thai population experienced a medium level of recession of PA(-26.1%)and a moderate level of recovery of PA(37.44%).PA recovery in the Thai population resembled an imperfect V shape,reflecting a sharp decline followed by an immediate upturn;still,recovered PA remained lower than pre-pandemic levels.The quickest recovery was found among older adults,whereas students,young adults,residents of Bangkok,the unemployed,and those who had a negative attitude toward PA experienced the highest recession of PA and were among the slowest to recover.Conclusion:The level of recovery of PA among Thai adults is largely determined by the preventive behaviors demonstrated by groups within the population who have a higher awareness of their health.The effect of the mandatory coronavirus disease 2019 containment measures on PA was temporary.However,the slower recovery rate of PA among some individuals was caused by a combination of restrictive measures and socioeconomic inequality,which required more time and effort to overcome.

关键词： Health promotion Preventive behavior Resilience Surveillance

The lockdown and vaccination distribution in Thailand's COVID-19 epidemic: A model study

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Infectious Disease Modelling 2023年第2期8卷 551-561页

作者： Sittisede Polwiang Department of Mathematics Faculty of ScienceSilpakorn UniversityNakhon Pathom73000Thailand

Background:Several countries used varied degrees of social isolation measures in response to the COVID-19 outbreak.In 2021,the lockdown in Thailand began on July 20 and lasted for the following six weeks.The lockdown has extremely detrimental effects on the economy and society,even though it may reduce the number of COVID-19 instances.Our goals are to assess the impact of the lockdown policy,the commencement time of lockdown,and the vaccination rate on the number of COVID-19 cases in Thailand in 2021.Methods:We modeled the dynamics of COVID-19 in Thailand throughout 2021 using the SEIR model.The Google Mobility Index,vaccine distribution rate,and lockdown were added to the model.The Google Mobility Index represents the movement of individuals during a pandemic and shows how people react to lockdown.The model also examines the effect of vaccination rate on the incidence of COVID-19.Results:The modeling approach demonstrates that a 6-week lockdown decreases the incidence number of COVID-19 by approximately 15.49e18.17%,depending on the timing of the lockdown compared to a non-lockdown scenario.An increasing vaccination rate potentially reduce the incidence number of COVID-19 by 5.12e18.35%without launching a lockdown.Conclusion:Lockdowns can be an effective method to slow down the spread of COVID-19 when the vaccination program is not fully functional.When the vaccines are easily accessible on a large scale,the lockdown may terminated.

关键词： COVID-19 SEIR model Lockdown Google community mobility reports Vaccination

Synergistic effects of structural, crystalline, and chemical defects on the photocatalytic performance of Y-doped ZnO for carbaryl degradation

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Journal of Environmental Sciences 2023年第2期124卷 667-677页

作者： Supphadate Sujinnapram Sutthipoj Wongrerkdee Department of Physics Faculty of Liberal Arts and ScienceKasetsart University Kamphaeng Saen CampusKamphaengsaenNakhon Pathom 73140Thailand

In this study,a photocatalytic material consisting of ZnO and yttrium-doped ZnO(YZO)nanoparticles was obtained via a facile precipitation conducted under ambient pressure whereby crystalline ZnO was successfully doped with yttrium.YZO had a hexagonal wurtzite polycrystalline structure with smaller crystal and grain sizes than ZnO,which in turn meant larger specific surface area and pore volume.Chemical defects were also produced,which facilitated photocatalytic activity,because such defects can act as reaction centers.The optical band gap magnitude and the diamagnetic nature of YZO were also determined.The structural,crystalline,and chemical defects of YZO synergistically enhanced the photocatalytic degradation of carbaryl;indeed,the kinetic rate constant of this reaction catalyzed by YZO was 11.17×10^(−2) min^(−1) under natural sunlight irradiation,higher than the value measured for ZnO(8.68×10^(−2) min^(−1)).Evidence thus indicates that yttrium-doping effectively modified some properties of ZnO nanoparticles so that YZO nanoparticles proved a suitable photocatalytic material for carbaryl degradation.

关键词： ZnO Nanoparticle Photocatalytic material Defect Carbaryl

Titanium dioxide-graphene composite electrochemical sensor for detection of hexavalent chromium

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International Journal of Minerals,Metallurgy and Materials 2022年第3期29卷 529-535页

作者： Natpichan Pienutsa Krittamet Yannawibut Jetthana Phattharaphongmanee Oukrit Thonganantakul Sira Srinives Nanocomposite Engineering Laboratory(NanoCEN) Department of Chemical EngineeringFaculty of EngineeringMahidol University25/25 PuttamonthonNakhon Pathom73170Thailand

Hexavalent chromium(Cr(VI))compound is useful to various industries but is toxic and carcinogenic.In this research work,we fab-ricate an amperometric sensor for the determination of Cr(VI),using a titanium dioxide(TiO2)-reduced graphene oxide(rGO)composite as the sensing element.The composite was synthesized following sol−gel chemistry,yielding TiO2 nanoparticles of~50 nm in size,immobilized on chemically exfoliated rGO sheets.The composite was employed in a 3-electrode electrochemical cell and operated in an amperometric mode,exhibiting good responses to the 50 to 500 ppb Cr(VI).Our best result from pH 3 Mcilvane’s buffer medium reveals the sensitivity of 9.12×10−4 ppb−1 and a detection limit of 6 ppb with no signal interference from 200 ppm Ca(II),150 ppm Mg(II),and 50 ppb Pb(II).The excellent results of the TiO2-rGO sensor can be attributed to synergic effects between TiO2 and rGO,resulting from the presence of n-p heterojunctions and the formation of the TiO2 nanoparticles on rGO.

关键词： photocatalyst electrochemical sensor hexavalent chromium graphene

Pathogenesis,clinical manifestations,diagnosis,and treatment progress of achalasia of cardia

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World Journal of Clinical Cases 2023年第8期11卷 1741-1752页

作者： Ming-Yue Li Qing-Hua Wang Run-Peng Chen Xiao-Fang Su Dong-Yang Wang School of Nursing Binzhou Medical UniversityYantai 264003Shandong ProvinceChina Faculty of Nursing Mahidol UniversityNakhon Pathom 73170Thailand

Achalasia cardia,type of esophageal dynamic disorder,is a relatively rare primary motor esophageal disease characterized by the functional loss of plexus ganglion cells in the distal esophagus and lower esophageal sphincter.Loss of function of the distal and lower esophageal sphincter ganglion cells is the main cause of achalasia cardia,and is more likely to occur in the elderly.Histological changes in the esophageal mucosa are considered pathogenic;however,studies have found that inflammation and genetic changes at the molecular level may also cause achalasia cardia,resulting in dysphagia,reflux,aspiration,retrosternal pain,and weight loss.Currently,the treatment options for achalasia focus on reducing the resting pressure of the lower esophageal sphincter,helping to empty the esophagus and relieve symptoms.Treatment measures include botulinum toxin injection,inflatable dilation,stent insertion,and surgical myotomy(open or laparoscopic).Surgical procedures are often subject to controversy owing to concerns about safety and effectiveness,particularly in older patients.Herein,we review clinical epidemiological and experimental data to determine the prevalence,pathogenesis,clinical presentation,diagnostic criteria,and treatment options for achalasia to support its clinical management.

关键词： Achalasia cardia Pathogenesis Clinical manifestations Diagnosis Treatment