Article
Environmental Sciences
Yun Liu, Antonia M. Calafat, Aimin Chen, Bruce P. Lanphear, Nana-Hawa Yayah Jones, Kim M. Cecil, Susan R. Rose, Kimberly Yolton, Jessie P. Buckley, Joseph M. Braun
Summary: This study examined the associations of prenatal and childhood exposure to per- and polyfluoroalkyl substances (PFAS) with pubertal development and reproductive hormones. The results showed that adolescent PFAS concentrations were associated with later pubic hair growth, breast maturation, and age at menarche in females, but there was no pattern for prenatal or other postnatal concentrations. No associations were observed between PFAS concentrations and pubic hair growth or reproductive hormones in males.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Public, Environmental & Occupational Health
Ying Zhang, Xin Yuan, XiaoHong Yang, XiangQuan Lin, ChunYan Cai, ShiJun Chen, ZhuanZhuan Ai, HuaKun ShangGuan, WenYong Wu, RuiMin Chen
Summary: This study investigated the associations of obesity with growth and puberty in children. The findings showed that children with obesity were taller in early childhood, had earlier onset of puberty, and experienced earlier cessation of growth. However, there was a sex dimorphism on the effect of obesity on the incidence of precocious puberty.
INTERNATIONAL JOURNAL OF PUBLIC HEALTH
(2023)
Article
Nutrition & Dietetics
Ifeoma Ekwuocha, Ana Pereira, Camila Corvalan, Karin B. Michels, Audrey J. Gaskins
Summary: This study investigated the relationship between dietary iron intake and age at menarche in Chilean girls. The results showed a nonlinear association between iron intake and age at menarche. Iron intake between 8 and 15 mg/d was associated with a lower probability of earlier menarche. However, the effect of iron intake above 15 mg/d on menarche timing was not clear, and the association was attenuated after adjusting for height and body weight.
JOURNAL OF NUTRITION
(2023)
Review
Obstetrics & Gynecology
Mariana Rivas Paz, Blanca Miriam Torres Mendoza, Nathaly Torres Castillo
Summary: This study reviewed the updated bibliography on risk factors related to the age of onset of menarche. It found that early estrogen stimulus triggers pathologies such as insulin resistance, asthma, and short stature, while a late estrogenic stimulus results in low bone mineral density. Recognizing the importance of menarche as a protective or triggering factor can help implement preventive measures to avoid future pathologies.
INTERNATIONAL JOURNAL OF GYNECOLOGY & OBSTETRICS
(2023)
Article
Endocrinology & Metabolism
Xinyi Liang, Ke Huang, Guangping Dong, Ruimin Chen, Shaoke Chen, Rongxiu Zheng, Chunlin Wang, Haiyan Wei, Bingyan Cao, Yan Liang, Hui Yao, Zhe Su, Mireguli Maimaiti, Feihong Luo, Pin Li, Min Zhu, Hongwei Du, Yu Yang, Lanwei Cui, Shuting Si, Guannan Bai, Yunxian Yu, Er-Gang Wang, Paul L. Hofman, Junfen Fu
Summary: Over the past decade, pubertal development has been occurring earlier in Chinese children. The age for breast development in girls is 9.65 years and for testicular volume ≥ 4 mL in boys is 10.65 years. Obesity and overweight are associated with a higher risk for early puberty onset.
JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM
(2023)
Article
Endocrinology & Metabolism
Mengnan Lu, Ruoyang Feng, Yujie Qin, Hongyang Deng, Biyao Lian, Chunyan Yin, Yanfeng Xiao
Summary: This study investigated the influence of genetic and environmental factors on menarche age by conducting a transcriptome-wide association study. Several genes associated with menarche age and environmental endocrine disruptors were identified. These findings expand our understanding of the genetic and environmental factors related to the onset of female puberty.
FRONTIERS IN ENDOCRINOLOGY
(2022)
Article
Clinical Neurology
Raphael Hirtz, Lars Libuda, Anke Hinney, Manuel Focker, Judith Buehlmeier, Paul -Martin Holterhus, Alexandra Kulle, Cordula Kiewert, Ronny Kuhnert, Caroline Cohrdes, Triinu Peters, Johannes Hebebrand, Corinna Grasemann
Summary: This study investigated the relationship between depression severity and pubertal development, as well as gonadal/adrenal hormones in girls with significant depressive symptoms. The findings suggest that age at menarche is important for adolescent depression, and it could be considered a prognostic factor for assessing the risk of depression in adolescents. Efforts should be made to address risk factors that contribute to an earlier age at menarche.
JOURNAL OF AFFECTIVE DISORDERS
(2022)
Article
Public, Environmental & Occupational Health
Esther M. John, Theresa H. Keegan, Mary Beth Terry, Jocelyn Koo, Sue A. Ingles, Jenny T. Nguyen, Catherine Thomsen, Regina M. Santella, Khue Nguyen, Beizhan Yan
Summary: This study found that polycyclic aromatic hydrocarbons (PAHs) can affect the timing of pubertal development in overweight girls, particularly the development of breast and pubic hair. This is an important risk factor for breast cancer.
Article
Public, Environmental & Occupational Health
Rongbin Xu, Panliang Zhong, Catherine Jan, Yi Song, Xiuqin Xiong, Dongmei Luo, Yanhui Dong, Jun Ma, Randall S. Stafford
Summary: Girls in East Asia have a higher risk of myopia after puberty, which may explain the sex difference in myopia prevalence. Further research is needed to understand the underlying reasons for this disparity.
FRONTIERS IN PUBLIC HEALTH
(2022)
Article
Psychology, Developmental
Emily A. Rosenthal, Stephen P. Hinshaw
Summary: Pubertal timing is associated with negative mental and physical health outcomes. Previous research on pubertal timing in youth with attention-deficit hyperactivity disorder (ADHD) did not consider potential sex differences. This study extends previous findings by comparing pubertal timing in female adolescents with and without ADHD, and by examining the effects of stimulant medication use during childhood on pubertal timing in female ADHD patients. The results showed that there were no significant differences in pubertal timing between females with and without ADHD, but females with ADHD who had a history of stimulant medication use experienced later menarche, potentially due to differences in BMI between the groups.
EUROPEAN CHILD & ADOLESCENT PSYCHIATRY
(2023)
Article
Endocrinology & Metabolism
Ivanice Fernandes Barcellos Gemelli, Thais Rasia Silva, Edson dos Santos Farias, Maria Teresa Anselmo Olinto, Poli Mara Spritzer
Summary: The study found a prevalence of 22.03% for insulin resistance (IR) in female adolescents, with ages 15-17 and time since menarche >= 2 years acting as protective factors. Additionally, black adolescents, those with increased waist circumference, and overweight/obese adolescents were found to be at higher risk for IR.
DIABETOLOGY & METABOLIC SYNDROME
(2021)
Article
Psychology, Developmental
Fartein Ask Torvik, Martin Flato, Tom A. McAdams, Ian Colman, Karri Silventoinen, Camilla Stoltenberg
Summary: The study found that earlier puberty is associated with better academic achievement in both boys and girls, while early age at menarche in girls is linked to lower academic achievement. Part of the sex differences in academic achievement can be explained by differences in pubertal development, with some rooted in prepubertal differences.
JOURNAL OF ADOLESCENT HEALTH
(2021)
Review
Pediatrics
Swathi Mohanraj, Hemchand Krishna Prasad
Summary: Testicular volume >= 4 ml and breast budding are the first signs of puberty. Delayed puberty is diagnosed when there is no thelarche by 13 y or menarche by 15 y in girls, and no testicular enlargement by 14 y in boys. Delayed puberty can be due to hypogonadotrophic hypogonadism, hypergonadotrophic hypogonadism or eugonadotrophic eugonadism characterized by low, elevated and normal gonadotrophin levels, respectively. Evaluation of sexual maturity and growth chart assessment are important. The absence of menarche in girls with thelarche suggests structural abnormalities or disorders of sexual development. Measurement of bone age and other tests are necessary for diagnosis. Hormonal induction of puberty is done with testosterone and estradiol in boys and girls, respectively. Hormone replacement is done gradually over 2 years. Evaluation of adult sexual maturity is important.
INDIAN JOURNAL OF PEDIATRICS
(2023)
Article
Genetics & Heredity
Raphael Hirtz, Christine Hars, Roaa Naaresh, Bjoern-Hergen Laabs, Jochen Antel, Corinna Grasemann, Anke Hinney, Johannes Hebebrand, Triinu Peters
Summary: In this study, Mendelian randomization was used to investigate the causal relationship between age at menarche and depression risk. The results support previous epidemiological studies suggesting a link between age at menarche and depression.
FRONTIERS IN GENETICS
(2022)
Article
Multidisciplinary Sciences
Saeideh Nasiri, Mahrokh Dolatian, Fahimeh Ramezani Tehrani, Hamid Alavi Majd, Azam Bagheri
Summary: The study examined the relationship model of social determinants of health with menarche age of girls. The results showed that multiple factors directly and indirectly affect the girls' age at menarche. The proposed model could be used as a framework in research, design, and implementation of programs relating to adolescent girls.
Article
Health Care Sciences & Services
Claire A. Kolaja, Ben Porter, Teresa M. Powell, Rudolph P. Rull
Summary: This study assessed the efficiency and feasibility of using multiple imputation to recover completely missing data in a large longitudinal cohort study. The results showed that the imputation models successfully identified suicidal ideation and had similar associations with related constructs. Despite relatively low sensitivity and positive predictive value, applying MI techniques allowed for the inclusion of an otherwise missing variable.
BMC MEDICAL RESEARCH METHODOLOGY
(2021)
Article
Medicine, General & Internal
Cynthia A. LeardMann, Hope Seib McMaster, Steven Warner, Alejandro P. Esquivel, Ben Porter, Teresa M. Powell, Xin M. Tu, William W. Lee, Rudolph P. Rull, Charles W. Hoge
Summary: The study evaluated the ability to compare and assess PTSD based on DSM-IV and DSM-5 criteria using PTSD Checklists (PCLs), with findings suggesting successful assessment and comparison of PTSD over time with either PCL instrument in veteran and military populations.
Article
Psychiatry
Isabel G. Jacobson, Amy B. Adler, Kimberly A. Roenfeldt, Ben Porter, Cynthia A. LeardMann, Rudolph P. Rull, Charles W. Hoge
Summary: The study shows that combat deployment severity and comorbid PTSD/depression screen positive results are associated with negative impact on posttraumatic growth. Additionally, there is a correlation between PTG and mental health problems, suggesting that PTG is not independent from the negative psychological impact of traumatic experiences.
PSYCHIATRY-INTERPERSONAL AND BIOLOGICAL PROCESSES
(2021)
Article
Endocrinology & Metabolism
Felicia R. Carey, Isabel G. Jacobson, Kimberly A. Roenfeldt, Rudolph P. Rull
Summary: The study found that multiple deployments may support healthy weight maintenance, while longer deployments may have a negative impact on weight maintenance. Among active duty Army and Marine Corps members without obesity, those with longer deployments were less likely to maintain a non-obese BMI compared to those with shorter deployments.
OBESITY SCIENCE & PRACTICE
(2022)
Article
Public, Environmental & Occupational Health
Felicia R. Carey, Isabel G. Jacobson, Keren Lehavot, Cynthia A. LeardMann, Claire A. Kolaja, Valerie A. Stander, Rudolph P. Rull
Summary: Sexual orientation affects the military and separation experiences of LGB service members and veterans, primarily in terms of dissatisfaction with the military, unit camaraderie, and reasons for separation.
Review
Public, Environmental & Occupational Health
Jennifer N. Belding, Sheila F. Castaneda, Isabel G. Jacobson, Cynthia A. LeardMann, Ben Porter, Teresa M. Powell, Claire A. Kolaja, Amber D. Seelig, Rayna K. Matsuno, Felicia R. Carey, Anna C. Rivera, Daniel W. Trone, Beverly D. Sheppard, Jennifer L. Walstrom, Edward J. Boyko, Rudolph P. Rull
Summary: This paper summarizes the methods, key findings, and future directions of the Millennium Cohort Study, which is the largest and longest running study conducted by the US Department of Defense. The study aims to investigate the effects of military service on service member health and well-being. Key findings include the association between specific military service-related factors and adverse health outcomes, as well as the potential increase in unhealthy behaviors and mental health issues post-transition from military service to veteran status. The study will continue to inform policy initiatives and health promotion efforts.
ANNALS OF EPIDEMIOLOGY
(2022)
Article
Psychology, Clinical
Ben Porter, Felicia R. Carey, Kimberly A. Roenfeldt, Rudolph P. Rull, Carl A. Castro
Summary: The transition from military to civilian life is often stressful for veterans. This study found that mental health symptoms fluctuate in the period leading up to and following separation from the military, with personnel with Honorable discharges showing no change in symptoms and personnel with Other than Honorable/General discharges reporting progressively greater symptoms leading to separation.
DEPRESSION AND ANXIETY
(2022)
Article
Medicine, General & Internal
Kalyn C. Jannace, Lisa Pompeii, David Gimeno Ruiz de Porras, William Brett Perkison, Jose-Miguel Yamal, Daniel W. Trone, Rudolph P. Rull
Summary: This study examines the relationship between military occupational categories and traumatic brain injury (TBI). The results show that all categories are significantly associated with service-related TBI, with Infantry/Tactical Operations having the highest odds. Additionally, there are differences in the relationship between occupational categories and TBI among enlisted and officer ranks.
Article
Public, Environmental & Occupational Health
Felicia R. Carey, Cynthia A. LeardMann, Keren Lehavot, Isabel G. Jacobson, Claire A. Kolaja, Valerie A. Stander, Rudolph P. Rull, Millennium Cohort Study Team
Summary: This study investigated whether there are health disparities among lesbian, gay, and bisexual individuals serving in the U.S. military. The findings showed that compared to heterosexual individuals, lesbian, gay, and bisexual individuals had poorer mental, physical, and behavioral health outcomes.
AMERICAN JOURNAL OF PREVENTIVE MEDICINE
(2022)
Article
Multidisciplinary Sciences
Anna C. Rivera, Cynthia A. LeardMann, Rudolph P. Rull, Adam Cooper, Steve Warner, Dennis Faix, Edwin Deagle, Rob Neff, Ryan Caserta, Amy B. Adler, Millennium Cohort Study Team
Summary: This study examined the association of different types of combat exposures with behavioral health outcomes, and found that combat severity, each type of combat event, and killing noncombatants were associated with adverse health outcomes. These associations did not differ by occupational specialization, though the prevalence and odds of outcomes were generally lower for Special Forces personnel.
Article
Clinical Neurology
Gwendolyn C. Carlson, Neika Sharifian, Isabel G. Jacobson, Cynthia A. LeardMann, Rudolph P. Rull, Jennifer L. Martin, Millennium Cohort Study Team
Summary: This study found that women service members and veterans who reported recent combat and/or sexual trauma experiences were more likely to have insomnia, and insomnia was associated with a higher risk of mental health outcomes. Recent experiences of sexual assault, sexual harassment, and combat were associated with an increased risk of insomnia, which in turn was associated with a higher risk of depression and PTSD. Recent combat experience did not moderate the associations between recent sexual trauma and insomnia or mental health outcomes.
Article
Oncology
Neika Sharifian, Felicia R. Carey, Julia S. Seay, Sheila F. Castaneda, Edward J. Boyko, Rudolph P. Rull
Summary: Previous research on the link between military factors and cancer-specific mortality has yielded inconsistent findings. This study found that non-deployers had a higher risk of overall and early cancer mortality compared to those with combat experiences, and enlisted individuals had a higher risk of lung cancer mortality compared to officers. Higher education was associated with a reduced risk of overall, early, and lung cancer mortality, while smoking and life stressors were associated with an increased risk.
CANCER EPIDEMIOLOGY BIOMARKERS & PREVENTION
(2023)
Article
Clinical Neurology
Kayla Reed-Fitzke, Cynthia A. LeardMann, Armeda S. Wojciak, Anthony J. Ferraro, Alexus Hamilton, James M. Duncan, Rudolph P. Rull
Summary: This study used a person-centered approach to examine the association between adverse childhood experiences (ACES) and health outcomes, identifying five distinct classes among the sample of male Marines. The findings suggest that specific patterns of ACEs, particularly those inclusive of parental absence, may be more useful indicators for identifying individuals at heightened risk for mental health concerns.
JOURNAL OF AFFECTIVE DISORDERS
(2023)
Article
Anthropology
Teresa Powell, Toni Rose E. Geronimo-Hara, Laura J. Tobin, Carrie D. Donoho, Beverly L. Sheppard, Jennifer P. Walstrom, Rudolph J. Rull, Dennis Faix, Millennium Cohort Study
Summary: This study tested the effectiveness of offering multiple pre-incentives to increase the survey response rate in the Millennium Cohort Study, and found that participants who received a gift card or cash pre-incentive had the highest response rates. Giving participants a monetary pre-incentive was an effective way to increase response rates and participant retention.
Article
Multidisciplinary Sciences
Claire Kolaja, Sheila F. Castaneda, Susan I. Woodruff, Rudolph P. Rull, Richard F. Armenta
Summary: US service members injured in recent conflicts in Iraq and Afghanistan were more likely to survive compared to previous conflicts, thanks to advancements in medicine and protective gear. However, there is limited research on the long-term impact of injuries sustained during deployment on the physical and mental quality of life among service members.
Article
Environmental Sciences
Muqiu Hu, Xin Zhao, Jinghan Gu, Lulu Qian, Zhiqing Wang, Yuanyuan Nie, Xiaoyu Han, Long An, Haiqiang Jiang
Summary: Due to its simple process, environmental friendliness, and low operating costs, biometallurgy has become a popular technology for metals recovering from low-grade ores and tailings. An optimized agar was used to isolate and grow functional bacteria, resulting in the successful isolation of six functional stains. These strains were further tested for their ability to leach metals from polymetallic sulfide tailings, with significant improvements observed when the strains were mixed together. The selection of leaching process should be based on tailings composition and target metals.
ENVIRONMENTAL RESEARCH
(2024)
Review
Environmental Sciences
Saqib Hassan, Aswin Thacharodi, Anshu Priya, R. Meenatchi, Thanushree A. Hegde, R. Thangamani, Ht Nguyen, Arivalagan Pugazhendhi
Summary: An Endocrine Disrupting Chemical (EDC) is a compound that disrupts the function of the endocrine system and is found in the environment. EDCs, such as Bisphenol A and pesticides, have been shown to have negative effects on the female reproductive system. Understanding the relationship between EDCs and women's health is crucial for developing strategies to protect reproductive health and informing public policy decisions.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Lichang Zhou, Zhaoling Li, Boyi Cheng, Jinqi Jiang, Xinqi Bi, Zongping Wang, Guanghao Chen, Gang Guo
Summary: Thiosulfate can promote sulfur-mediated bacterial activity, inhibit glycogen accumulating organisms, and enhance denitrification efficiency. After the carbon source is reduced, the competitive ability of glycogen accumulating organisms increases, resulting in reduced sulfate reduction.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Claire E. Campbell, Devyn L. Cotter, Katherine L. Bottenhorn, Elisabeth Burnor, Hedyeh Ahmadi, W. James Gauderman, Carlos Cardenas-Iniguez, Daniel Hackman, Rob McConnell, Kiros Berhane, Joel Schwartz, Jiu-Chiuan Chen, Megan M. Herting
Summary: Recent studies have found a connection between air pollution and increased risk for behavioral problems during development. However, more longitudinal studies are needed to investigate how exposure during the transition to adolescence may affect emotional behaviors.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Jing-hong Liang, Ru-yu Yang, Mei-ling Liu, Ying-qi Pu, Wen-wen Bao, Yu Zhao, Li-xin Hu, Yu-shan Zhang, Shan Huang, Nan Jiang, Xue-ya Pu, Shao-yi Huang, Guang-hui Dong, Ya-jun Chen
Summary: This study examines the association between urban Green and blue spaces (GBS) exposure and Emotion and behavior problems (EBP) in youth populations. The findings suggest that higher exposure to GBS, particularly green spaces (GS) and blue spaces (BS), is associated with a decrease in the risk of developing total difficulties in young individuals. The joint effect of GS and BS may also contribute to the decrease in EBPs.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Diego Ruiz-Sobremazas, Mario Ruiz Coca, Miguel Morales-Navas, Rocio Rodulfo-Cardenas, Caridad Lopez-Granero, Maria Teresa Colomina, Cristian Perez-Fernandez, Fernando Sanchez-Santed
Summary: Air pollution is associated with a range of health issues and gestational exposure to environmental pollutants may be linked to neurodevelopmental disorders. This study investigated the effects of oral gestational exposure to particulate matter (PM) on ultrasonic vocalizations (USV). The findings suggest that this exposure may lead to social deficits and abnormal gene expression related to neurotransmitter systems. Further research is needed to better understand the effects of air pollution on neurodevelopmental disorders and the neurotransmission systems involved.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Yagmur Kabakci, Sadiye Kosar, Ozgur Dogan, Fehmi Gorkem Uctug, Osman Atilla Arikan
Summary: This study investigated the effect of electrohydrolysis pretreatment on municipal solid waste. The results showed that applying electrohydrolysis pretreatment increased methane production and reduced the time required for hydrolysis, suggesting it is a promising method to improve anaerobic digestion efficiency.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Chuanwu Zhao, Yaozhong Pan, Hanyi Wu, Yu Zhu
Summary: This study analyzed the impact of industrial zones on urban heat islands using remote sensing images and a novel spectral index. The research found that the contraction or expansion of industrial zones has a significant effect on land surface temperature. The results are valuable for environmental assessment and fine management of industrial cities.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Bang Du, Zhongzhong Wang, Piet N. L. Lens, Xinmin Zhan, Guangxue Wu
Summary: This study investigated the performance, syntrophic relationships, microbial communities, and metabolic pathways of ethanol-fed reactors with different operational modes and solids retention times. The results showed that different microorganisms were enriched under different SRT conditions, and syntrophic bacteria related to methane production could be enriched under low SRT conditions.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Gokulan Ravindiran, Sivarethinamohan Rajamanickam, Muralikrishnan Ramalingam, Gasim Hayder, Balamurugan Karupaiya Sathaiah, Madhava Krishna Reddy Gaddam, Senthil Kumar Muniasamy, Priya Arunkumar
Summary: The present study investigated the sustainable approach for wastewater treatment using waste algal blooms. The biochar produced by the marine algae Ulva reticulata was used to remove chromium, nickel, and zinc from aqueous solutions. The study examined the adsorbents' properties and stability using SEM/EDX, FTIR, and XRD. The results showed that the biochar had high removal efficiency for the toxic metals, and the packed bed column effectively removed the heavy metal ions. The Thomas and Adams-Bohart models were found to best fit the regression values, and desorption studies were conducted to understand the sorption and elution processes.
ENVIRONMENTAL RESEARCH
(2024)
Review
Environmental Sciences
Vignesh Vinayagam, Kavitha Nagarasampatti Palani, Sudha Ganesh, Siddharth Rajesh, Vedha Varshini Akula, Ramapriyan Avoodaiappan, Omkar Singh Kushwaha, Arivalagan Pugazhendhi
Summary: The presence of pollutants in water contributes to global pollution and poses significant threats to humans and wildlife. Finding effective wastewater treatment techniques is crucial for reducing pollutant accumulation in the environment. This paper highlights recent advances in the electrochemical advanced oxidation method and other processes for treating pharmaceuticals, dyes, and pesticide-polluted effluents.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
M. M. M. Ahmed, Kai-Yue Chen, Fang-Yu Tsao, Yi-Cheng Hsieh, Yu-Ting Liu, Min Tzou
Summary: This study investigated the sorption of citric acid onto humic acid-iron hydr(o)xide coprecipitate (HAFHCP) and the reciprocal effects of citric acid and P sorption on HAFHCP. The results showed that citric acid could increase P availability and have an impact on P sorption.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Xibo Xu, Zeqiang Wang, Xiaoning Song, Wenjie Zhan, Shuting Yang
Summary: The selection of predictor variables is crucial in building a digital mapping model for potentially toxic elements (PTEs) in soil. Traditionally, spatial and spectral parameters have been used as predictor variables, but the temporal dimension is often overlooked. This study demonstrates the value of incorporating temporal indices in the model, leading to significant performance improvements. The temporal-spatial-spectral covariate combinations used in a random forest (RF) algorithm achieve satisfactory mapping accuracy and outperform other methods.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Yan Pei, Xun Liu, Mengbo Cao, Zijun Wang, Hongbing Yang
Summary: Heteroatom doping can reconfigure the electronic structure of heterogeneous catalysts, leading to the development of advanced oxidation water purification materials with superior performance and stability. In this study, a series of catalysts with different elemental doping were prepared using a simple and environmentally friendly method. The S-doped NiCo2O4 catalyst showed excellent catalytic performance for the removal of Tetracycline, with significantly increased kinetic constant and high oxidation and mineralization efficiency in a wide pH range. The degradation process was dominated by non-radical oxidation pathway after S doping, and the overall process moved towards low toxicity.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Srivalli Thimmarayan, Harshavardhan Mohan, Gaddapara Manasa, Karthi Natesan, Shanmugam Mahendran, Pavithra Muthukumar Sathya, Byung-Taek Oh, R. Ravi Kumar, Rangasamy Sigamani Gandhimathi, Arul Jayaprakash, Kamala-Kannan Seralathan
Summary: This study investigated the bacterial degradation of naphthalene (NPT) isolated from crude oil-contaminated soil. Bacillus sp. GN 3.4, a potential bacteria for NPT biodegradation, was isolated and the optimal conditions for NPT degradation were determined. The study suggests that Bacillus sp. GN 3.4 could potentially aid in bioremediation by eliminating NPT from the soil.
ENVIRONMENTAL RESEARCH
(2024)