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Journal articles on the topic 'PMS'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 March 2023

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1

Song, Tiehong, Guanqiao Li, Ruihua Hu, Ying Liu, Hongxu Liu, and Yanjiao Gao. "Degradation of Antibiotics via UV-Activated Peroxodisulfate or Peroxymonosulfate: A Review." Catalysts 12, no. 9 (September 9, 2022): 1025. http://dx.doi.org/10.3390/catal12091025.

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The ultraviolet (UV)/H2O2, UV/O3, UV/peroxodisulfate (PDS) and UV/peroxymonosulfate (PMS) methods are called UV-based advanced oxidation processes. In the UV/H2O2 and UV/O3 processes, the free radicals generated are hydroxyl radicals (•OH), while in the UV/PDS and UV/PMS processes, sulfate radicals (SO4•−) predominate, accompanied by •OH. SO4•− are considered to be more advantageous than •OH in degrading organic substances, so the researches on activation of PDS and PMS have become a hot spot in recent years. Especially the utilization of UV-activated PDS and PMS in removing antibiotics in water has received much attention. Some influencing factors and mechanisms are constantly investigated and discussed in the UV/PDS and UV/PMS systems toward antibiotics degradation. However, a systematic review about UV/PDS and UV/PMS in eliminating antibiotics is lacking up to now. Therefore, this review is intended to present the properties of UV sources, antibiotics, and PDS (PMS), to discuss the application of UV/PDS (PMS) in degrading antibiotics from the aspects of effect, influencing factors and mechanism, and to analyze and propose future research directions.

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2

Xing, Xin, Lin Liu, Feng Cao, Xiao Dong Li, Zeng Yong Chu, and Hai Feng Cheng. "Silicon Carbide Base Ceramic Fiber Synthesis from Polycarbosilane-Modified Polymethylsilane Blend Polymers by Melt Spinning." Materials Science Forum 675-677 (February 2011): 139–42. http://dx.doi.org/10.4028/www.scientific.net/msf.675-677.139.

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A melt-spinnable precursor for SiC based fibers was prepared from blend polymers of polycarbosilane (PCS) and modified polymethylsilane (M-PMS). The blend polymers cured at 320°C are different from M-PMS and PCS. The ceramic yield of these blend polymers is about 83%. The C/Si ratio of M-PMS/PCS derived ceramics (pyrolyzed at 1250°C) is linear to the content of MPMS in M-PMS/PCS. After melt spinning, thermal oxidation curing, and pyrolysis, Si-C-O fibers were obtained. The diameter and the tensile strength of the resulted fibers are 16.5μm and 1.62GPa, respectively.

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3

Oh, Wen-Da, Yeek-Chia Ho, Mardawani Mohamad, Chii-Dong Ho, Rajiv Ravi, and Jun-Wei Lim. "Systematic Performance Comparison of Fe3+/Fe0/Peroxymonosulfate and Fe3+/Fe0/Peroxydisulfate Systems for Organics Removal." Materials 14, no. 18 (September 14, 2021): 5284. http://dx.doi.org/10.3390/ma14185284.

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Activated zero-valent iron (Ac-ZVI) coupled with Fe3+ was employed to activate peroxymonosulfate (PMS) and peroxydisulfate (PDS) for acid orange 7 (AO7) removal. Fe3+ was used to promote Fe2+ liberation from Ac-ZVI as an active species for reactive oxygen species (ROS) generation. The factors affecting AO7 degradation, namely, the Ac-ZVI:Fe3+ ratio, PMS/PDS dosage, and pH, were compared. In both PMS and PDS systems, the AO7 degradation rate increased gradually with increasing Fe3+ concentration at fixed Ac-ZVI loading due to the Fe3+-promoted liberation of Fe2+ from Ac-ZVI. The AO7 degradation rate increased with increasing PMS/PDS dosage due to the greater amount of ROS generated. The degradation rate in the PDS system decreased while the degradation rate in the PMS system increased with increasing pH due to the difference in the PDS and PMS activation mechanisms. On the basis of the radical scavenging study, sulfate radical was identified as the dominant ROS in both systems. The physicochemical properties of pristine and used Ac-ZVI were characterized, indicating that the used Ac-ZVI had an increased BET specific surface area due to the formation of Fe2O3 nanoparticles during PMS/PDS activation. Nevertheless, both systems displayed good reusability and stability for at least three cycles, indicating that the systems are promising for pollutant removal.

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4

Bruneau-Queyreix, Joachim, Jordi Mongay Batalla, Mathias Lacaud, and Daniel Negru. "PMS." ACM Transactions on Multimedia Computing, Communications, and Applications 14, no. 2s (May 22, 2018): 1–25. http://dx.doi.org/10.1145/3183515.

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5

Selvam, P. M. Sithar, and K. T. Nagalakshmi. "Fuzzy PMS Ideals in PMS Algebras." Annals of Pure and Applied Mathematics 12, no. 2 (November 11, 2016): 153–59. http://dx.doi.org/10.22457/apam.v12n2a6.

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6

Hu, Jiamin, Jing Zhang, Qingguo Wang, Qian Ye, Hao Xu, Guanyu Zhou, and Jinfeng Lu. "Efficient degradation of tetracycline by ultraviolet-based activation of peroxymonosulfate and persulfate." Water Science and Technology 79, no. 5 (January 23, 2019): 911–20. http://dx.doi.org/10.2166/wst.2019.034.

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Abstract In this study, the difference in oxidative capacity for removing antibiotics and the mechanism between the Cu(II)/peroxymonosulfate (PMS)/UV and Cu(II)/persulfate (PDS)/UV systems were compared under various conditions. The optimal Cu(II) concentration in the Cu(II)/PMS/UV system was 30 μM, and in the Cu(II)/PDS/UV system was 50 μM. With the PMS or PDS concentration increasing, higher tetracycline (TC) degradation in these two systems occurred. Investigation on the mechanism revealed that •OH was the primary radical in the Cu(II)/PMS/UV system, while SO4−• was the primary radical in the Cu(II)/PDS/UV system where •OH also played an important role. In these two systems, it was observed that Cu(I) was generated by PMS or PDS activated via UV illumination; however, oxygen alone could not promote TC removal. The degradation of TC was increased with the increasing pH level. In addition, TC degradation in the Cu(II)/PMS/UV system followed the pseudo-first-order kinetics model during the entire reaction period. It was found that the TC degradation kinetics in the Cu(II)/PDS/UV system can be divided into two parts (0 to 7 min and 10 to 50 min) and these two parts had good agreement with the pseudo-first-order kinetics model, respectively.

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7

Xiao, Guangfeng, Tiantian Xu, Muhammad Faheem, Yanxing Xi, Ting Zhou, Haseeb Tufail Moryani, Jianguo Bao, and Jiangkun Du. "Evolution of Singlet Oxygen by Activating Peroxydisulfate and Peroxymonosulfate: A Review." International Journal of Environmental Research and Public Health 18, no. 7 (March 24, 2021): 3344. http://dx.doi.org/10.3390/ijerph18073344.

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Advanced oxidation processes (AOPs) based on peroxydisulfate (PDS) or peroxymonosulfate (PMS) activation have attracted much research attention in the last decade for the degradation of recalcitrant organic contaminants. Sulfate (SO4•−) and hydroxyl (•OH) radicals are most frequently generated from catalytic PDS/PMS decomposition by thermal, base, irradiation, transition metals and carbon materials. In addition, increasingly more recent studies have reported the involvement of singlet oxygen (1O2) during PDS/PMS-based AOPs. Typically, 1O2 can be produced either along with SO4•− and •OH or discovered as the dominant reactive oxygen species (ROSs) for pollutants degradation. This paper reviews recent advances in 1O2 generation during PDS/PMS activation. First, it introduces the basic chemistry of 1O2, its oxidation properties and detection methodologies. Furthermore, it elaborates different activation strategies/techniques, including homogeneous and heterogeneous systems, and discusses the possible reaction mechanisms to give an overview of the principle of 1O2 production by activating PDS/PMS. Moreover, although 1O2 has shown promising features such as high degradation selectivity and anti-interference capability, its production pathways and mechanisms remain controversial in the present literatures. Therefore, this study identifies the research gaps and proposes future perspectives in the aspects of novel catalysts and related mechanisms.

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8

&NA;. "PMS 812." Drugs in R & D 2, no. 2 (February 1999): 116–17. http://dx.doi.org/10.2165/00126839-199902020-00009.

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9

Harder, Ben. "Preventing PMS." Science News 167, no. 25 (June 18, 2005): 387. http://dx.doi.org/10.2307/4016450.

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10

Powell, Sharon L. "PMS Haiku." Women's Reproductive Health 2, no. 2 (July 3, 2015): 144. http://dx.doi.org/10.1080/23293691.2015.1089153.

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11

Panahi, Faeze, and Mahbobeh Faramarzi. "The Effects of Mindfulness-Based Cognitive Therapy on Depression and Anxiety in Women with Premenstrual Syndrome." Depression Research and Treatment 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/9816481.

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Objective. Little research has been done regarding the role of psychotherapy in the treatment of Premenstrual Syndrome (PMS). The aim of this study was to examine the effect of mindfulness-based cognitive therapy (MBCT) on the PMS symptoms and depression and anxiety symptoms in women with PMS. Design. In a randomized controlled trial, a total of 60 students at Mazandaran University with mild to moderate PMS who had depressive symptoms (Beck depression scores 16–47) were randomly allocated to either an experimental (n=30) or a control (n=30) group. The experimental group received MBCT in eight group sessions (120 min each) over 8 weeks. The control group received no intervention. All participants completed the Premenstrual Assessment Scale (PAS), Beck Depression Inventory (BDI), and Beck Anxiety Inventory (BAI) at the beginning and the end of the study. Repeated-measure ANOVA was used to analyze the data. Results. At the end of study, the experimental and control groups showed the following scores, respectively (mean ± SD): depression, 15.73±6.99 and 25.36±7.14; anxiety, 16.96±7.78 and 26.60±9.38; and total PAS, 42.86±8.02 and 58.93±8.47. MBCT improved depression and anxiety symptoms and total PAS score. Conclusion. MBCT intervention is acceptable and potentially beneficial in women with PMS symptoms. Psychotherapy should be considered as a treatment option for mild to moderate PMS in women with depressive symptoms.

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12

Selvam, P. M. Sithar, and K. T. Nagalakshmi. "Anti Q-fuzzy PMS- ideals in PMS-algebras." International Journal of Mathematics Trends and Technology 39, no. 1 (November 25, 2016): 1–7. http://dx.doi.org/10.14445/22315373/ijmtt-v39p501.

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13

Zhou, Xiaojiao, Ningyao Tao, Wen Jin, Xingyuan Wang, Tuqiao Zhang, and Miaomiao Ye. "Inhibition of Phenol from Entering into Condensed Freshwater by Activated Persulfate during Solar-Driven Seawater Desalination." Molecules 27, no. 21 (October 23, 2022): 7160. http://dx.doi.org/10.3390/molecules27217160.

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Recently, solar-driven seawater desalination has received extensive attention since it can obtain considerable freshwater by accelerating water evaporation at the air–water interface through solar evaporators. However, the high air–water interface temperature can cause volatile organic compounds (VOCs) to enter condensed freshwater and result in water quality safety risk. In this work, an antioxidative solar evaporator, which was composed of MoS2 as the photothermal material, expandable polyethylene (EPE) foam as the insulation material, polytetrafluoroethylene (PTFE) plate as the corrosion resistant material, and fiberglass membrane (FB) as the seawater delivery material, was fabricated for the first time. The activated persulfate (PS) methods, including peroxymonosulfate (PMS) and peroxodisulfate (PDS), were applied to inhibit phenol from entering condensed freshwater during desalination. The distillation concentration ratio of phenol (RD) was reduced from 76.5% to 0% with the addition of sufficient PMS or PDS, which means that there was no phenol in condensed freshwater. It was found that the Cl− is the main factor in activating PMS, while for PDS, light, and heat are the dominant. Compared with PDS, PMS can make full utilization of the light, heat, Cl− at the evaporator’s surface, resulting in more effective inhibition of the phenol from entering condensed freshwater. Finally, though phenol was efficiently removed by the addition of PMS or PDS, the problem of the formation of the halogenated distillation by-products in condensed freshwater should be given more attention in the future.

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14

Zehra, Bashama, and Meena Kumari Patangay. "A STUDY ON PREVALENCE OF PRE MENSTRUAL SYNDROME, ITS ASSOCIATION WITH DIETARY HABITS AND STRESS LEVELS AMONG ADOLOSCENT GIRLS STUDYING IN GIRLS COLLEGE OF HYDERABAD." Journal of Advanced Scientific Research 13, no. 09 (October 31, 2022): 70–80. http://dx.doi.org/10.55218/jasr.202213910.

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Pre-Menstrual Syndrome is a group of physical, psychological, and emotional symptoms that begins 7-14 days before menses and fade once menses begins. PMDD is a psychiatric diagnosis of PMS. The cause of PMS is unknown. Hence studies need to be conducted to know the various lifestyle and dietary habits that increases the risk of PMS. The aim was to study the dietary pattern of adolescent girls aged 17-19 years of Girls college of Hyderabad during the PMS period. The objectives were to study the prevalence, association between lifestyle habits, dietary pattern and stress with PMS in these adolescent girls. Adolescent girls of Girls College, answered a self- constructed, pre tested, standardized questionnaire for the prevalence study. Information on lifestyle and dietary habits, dietary preferences and symptoms observed in PMS period, and the observed stress level was collected. Chi – square test and non- parametric test was done to interpret the data. Among the 300 respondents, 19.3% had PMDD, 46.3% had moderate to severe PMS and 34.3% had mild/no PMS. There was an association between PMS and consuming high calorie foods, herbal teas during PMS period (p is less than 0.05) and also with stress (pis less than0.05) Reducing high calorie foods help to reduce PMS symptoms. Adequate sleep, less screen time and avoiding skipping of meals, consuming less fast food would reduce the prevalence. Having higher level of stress increases the risk of developing PMS or even PMDD.

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15

Yu, Bing, Qingye Meng, Hao Hu, Tao Xu, Youqing Shen, and Hailin Cong. "Construction of Dimeric Drug-Loaded Polymeric Micelles with High Loading Efficiency for Cancer Therapy." International Journal of Molecular Sciences 20, no. 8 (April 22, 2019): 1961. http://dx.doi.org/10.3390/ijms20081961.

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Polymeric micelles (PMs) have been applied widely to transport hydrophobic drugs to tumor sites for cancer treatment. However, the low load efficiency of the drug in the PMs significantly reduces the therapeutic efficiency. We report here that disulfide-linked camptothecin (CPT) as a kind of dimeric drug can be effectively embedded in the core of poly(ε-caprolactone)–poly(ethylene glycol)–poly(ε-caprolactone) (PCL–PEG–PCL) PMs for improving drug-loading efficiency, and PEG can be used as a hydrophilic shell. Moreover, the dimeric CPT-loaded PCL–PEG–PCL PMs exhibited excellent solubility in phosphate-buffered saline (PBS) media and significant cytotoxicity to cancer cells.

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16

Li, Sijia, Manlin Qi, Qijing Yang, Fangyu Shi, Chengyu Liu, Juanrui Du, Yue Sun, Chunyan Li, and Biao Dong. "State-of-the-Art on the Sulfate Radical-Advanced Oxidation Coupled with Nanomaterials: Biological and Environmental Applications." Journal of Functional Biomaterials 13, no. 4 (November 7, 2022): 227. http://dx.doi.org/10.3390/jfb13040227.

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Sulfate radicals (SO4−) play important biological roles in biomedical and environmental engineering, such as antimicrobial, antitumor, and disinfection. Compared with other common free radicals, it has the advantages of a longer half-life and higher oxidation potential, which could bring unexpected effects. These properties have prompted researchers to make great contributions to biology and environmental engineering by exploiting their properties. Peroxymonosulfate (PMS) and peroxydisulfate (PDS) are the main raw materials for SO4− formation. Due to the remarkable progress in nanotechnology, a large number of nanomaterials have been explored that can efficiently activate PMS/PDS, which have been used to generate SO4−·for biological applications. Based on the superior properties and application potential of SO4−, it is of great significance to review its chemical mechanism, biological effect, and application field. Therefore, in this review, we summarize the latest design of nanomaterials that can effectually activate PMS/PDS to create SO4−, including metal-based nanomaterials, metal-free nanomaterials, and nanocomposites. Furthermore, we discuss the underlying mechanism of the activation of PMS/PDS using these nanomaterials and the application of SO4− in the fields of environmental remediation and biomedicine, liberating the application potential of SO4−. Finally, this review provides the existing problems and prospects of nanomaterials being used to generate SO4−· in the future, providing new ideas and possibilities for the development of biomedicine and environmental remediation.

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17

Promsri, Arunee. "Sex Difference in Running Stability Analyzed Based on a Whole-Body Movement: A Pilot Study." Sports 10, no. 9 (September 16, 2022): 138. http://dx.doi.org/10.3390/sports10090138.

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A sex-specific manner in running tasks is considered a potential internal injury risk factor in runners. The current study aimed to investigate the sex differences in running stability in recreational runners during self-preferred speed treadmill running by focusing on a whole-body movement. To this end, principal component analysis (PCA) was applied to kinematic marker data of 22 runners (25.7 ± 3.3 yrs.; 12 females) for decomposing the whole-body movements of all participants into a set of principal movements (PMs), representing different movement synergies forming together to achieve the task goal. Then, the sex effects were tested on three types of PCA-based variables computed for individual PMs: the largest Lyapunov exponent (LyE) as a measure of running variability; the relative standard deviation (rSTD) as a measure of movement structures; and the root mean square (RMS) as a measure of the magnitude of neuromuscular control. The results show that the sex effects are observed in the specific PMs. Specifically, female runners have lower stability (greater LyE) in the mid-stance-phase movements (PM4−5) and greater contribution and control (greater rSTD and RMS) in the swing-phase movement (PM1) than male runners. Knowledge of an inherent sex difference in running stability may benefit sports-related injury prevention and rehabilitation.

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18

Gauldin, Deb. "Deb's Page: PMS." Journal of Perinatal Education 9, no. 4 (October 1, 2000): 47–48. http://dx.doi.org/10.1624/105812400x87914.

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19

&NA;, &NA;. "MEDITATION RELIEVES PMS." AJN, American Journal of Nursing 90, no. 12 (December 1990): 15. http://dx.doi.org/10.1097/00000446-199012000-00007.

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20

McDonough, Paul G., and Robert L. Reid. "Neuropeptides and PMS." Fertility and Sterility 46, no. 4 (October 1986): 738–40. http://dx.doi.org/10.1016/s0015-0282(16)49664-0.

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21

Riley, Michael W., and David J. Cochran. "Productivity and Pms." Proceedings of the Human Factors Society Annual Meeting 30, no. 9 (September 1986): 955–58. http://dx.doi.org/10.1177/154193128603000924.

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Premenstrual syndrome (PMS) influences the productivity of the female worker. The symptoms and effects of PMS are numerous, varying in intensity and differing by individual. This paper presents a brief review of current PMS literature and the results of a written questionnaire. Forty females were surveyed. Sixty-five percent of the respondents reported that their physical performance decreased fifty-four percent of the time due to PMS. In addition, respondents reported that their level of concentration during mental work decreased fifty-four percent of the time because of PMS.

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22

Ramadani, Mery. "PREMENSTRUAL SYNDROME (PMS)." Jurnal Kesehatan Masyarakat Andalas 7, no. 1 (September 1, 2012): 21–25. http://dx.doi.org/10.24893/jkma.v7i1.103.

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Premenstrual syndrome (PMS) merupakan salah satu gangguan yang paling umum pada wanita, Sebanyak 30-50% dari wanita mengalami gejala PMS, dan sekitar 5% merasakangejala cukup parah yang berdampak besar pada kesehatan fisik dan fungsi sosial mereka. Sebanyak 1 0% lainnya mengalami PMS yang sangat parah hingga menyebabkan ketidakhadiran di sekolah ataupun di tempat kerja selama 1-3 liari setiap bulannya. PMS ditandai dengan perubahan yang cepat dalam suasana hati (misalnya, depresi, iritabilitas, kemarahan, agresi, mudah menangis, ketegangan, kecemasan), dan gejala fisik (misalnya ketidaknyamanan payudara, nyeri pada perut, sakit kepala, kembung, edema, kelelahan, insomnia) selama fase luteal akhir siklus menstruasi. Memperbaiki gaya hidup dengan meningkatkan aktivitas fisik dan pola makan yang sehat dapat mengurangi terjadinya PMS.

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23

KUBOTA, Kiyoshi. "Case-cohort Study and PMS." Japanese Journal of Pharmacoepidemiology/Yakuzai ekigaku 11, no. 1 (2006): 23–34. http://dx.doi.org/10.3820/jjpe1996.11.23.

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24

Ragavan, C., M. Balamurugan, B. Thirumaran, and S. Senthilkumar. "CARTESIAN PRODUCT OF INTUITIONISTIC FUZZY PMS-IDEALS OF PMS-ALGEBRAS." Advances in Mathematics: Scientific Journal 9, no. 3 (July 3, 2020): 1459–66. http://dx.doi.org/10.37418/amsj.9.3.92.

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25

Derseh, Beza Lamesgin, Yohannes Gedamu Wondifraw, and Berhanu Assaye Alaba. "On t-Intuitionistic Fuzzy PMS-Subalgebras of a PMS Algebra." International Journal of Fuzzy System Applications 12, no. 1 (February 10, 2023): 1–22. http://dx.doi.org/10.4018/ijfsa.317103.

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In this paper, the authors extend the concept of a t-intuitionistic fuzzy set to PMS-subalgebras of PMS-algebras. The authors define the t-intuitionistic fuzzy PMS-subalgebra of a PMS-algebra and show that any intuitionistic fuzzy PMS-subalgebra of a PMS-algebra is a t-intuitionistic fuzzy PMS-subalgebra. The authors provide the condition for an intuitionistic fuzzy set in a PMS-algebra to be a t-intuitionistic fuzzy PMS-subalgebra. The authors use their (α,β) level cuts to characterize the t-intuitionistic fuzzy PMS-subalgebras of PMS-algebra. The authors investigate whether the homomorphic images and inverse images of t-intuitionistic fuzzy PMS-subalgebras are also t-intuitionistic fuzzy PMS-subalgebras. Furthermore, the authors show that the homomorphic images and inverse images of the nonempty (α,β) level cuts of the t-intuitionistic fuzzy PMS-subalgebras of a PMS-algebra are again PMS-subalgebras of a PMS-algebra. Finally, the authors show that the Cartesian product of the t-intuitionistic fuzzy PMS-subalgebras of a PMS-algebra is itself a t-intuitionistic fuzzy PMS-subalgebra and characterize it in terms of its (α,β) level cuts.

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26

Song, Haoran, Linxia Yan, Yuwei Wang, Jin Jiang, Jun Ma, Changping Li, Gang Wang, Jia Gu, and Peng Liu. "Electrochemically activated PMS and PDS: Radical oxidation versus nonradical oxidation." Chemical Engineering Journal 391 (July 2020): 123560. http://dx.doi.org/10.1016/j.cej.2019.123560.

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27

Derseh, Beza Lamesgin, Berhanu Assaye Alaba, and Yohannes Gedamu Wondifraw. "t-Intuitionistic Fuzzy Structures on PMS-Ideals of a PMS-Algebra." International Journal of Mathematics and Mathematical Sciences 2022 (September 23, 2022): 1–13. http://dx.doi.org/10.1155/2022/5101293.

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In this article, we apply the concept of a t -intuitionistic fuzzy set to PMS-ideals in PMS-algebras. The notion of the t -intuitionistic fuzzy PMS-ideal of PMS-algebra is introduced, and several related properties are studied. The relationships between a t -intuitionistic fuzzy PMS-ideal and a t -intuitionistic fuzzy PMS-subalgebra of a PMS-algebra, as well as the relationships between an intuitionistic fuzzy PMS-ideal and a t -intuitionistic fuzzy PMS-ideal are discussed in detail. A condition for an intuitionistic fuzzy set to be a t -intuitionistic fuzzy PMS-ideal is provided. The t -intuitionistic fuzzy PMS-ideals of PMS-algebra are described using their α , β level cuts. The homomorphism of a t -intuitionistic fuzzy PMS-ideal of a PMS-algebra is studied, and its homomorphic image and inverse image are explored. The Cartesian product of any two t -intuitionistic fuzzy PMS-ideals is discussed, and some related results are derived. The Cartesian product of the t -intuitionistic fuzzy PMS-ideals is also characterized using its α , β level cuts. The strongest t -intuitionistic fuzzy PMS-relation in a PMS-algebra is defined. Finally, the relationships between the strongest t -intuitionistic fuzzy PMS-relation and t -intuitionistic fuzzy PMS-ideal are studied.

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28

Li, Fen, Zhao Xu, Xiaoyan Wen, Xiaoyong Li, Yanhong Bai, and Jianjun Li. "Preparation and characterization of Ca(II) cross-linking modified pectin microspheres for Pb(II) adsorption." Water Science and Technology 79, no. 8 (April 15, 2019): 1484–93. http://dx.doi.org/10.2166/wst.2019.151.

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Abstract A novel adsorbent, composed of cross-linked de-esterified pectin microspheres, was prepared via cross-linking with Ca(II) and modification by de-esterified pectin, low-methoxyl pectin (LMP) and pectic acid (PA). Fourier transform infrared (FTIR), energy dispersive spectrometry (EDS), scanning electron microscopy (SEM) and atomic absorption spectroscopy (AAS) were applied too, exhibiting a successful fabrication, good adsorption ability, and well-defined surface microstructure beneficial to Pb(II) adsorption. The adsorption ability of pectin microspheres (PMs), low-methoxyl pectin microspheres (LMPMs) and pectic acid microspheres (PAMs) for Pb(II) in aqueous solution were explored. The maximum adsorption capacity of PMs, LMPMs and PAMs was 127 mg·g−1, 292 mg·g−1 and 325 mg·g−1 at pH 5.0 respectively, indicating a great improvement of LMPMs and PAMs in the adsorption ability for Pb(II) compared with PMs. Furthermore, the adsorption mechanism was proposed. The experimental data were well fitted with pseudo-second-order kinetic and Langmuir isotherm models. Five-cycle reusability tests demonstrated that microspheres could be used repeatedly. All the results confirmed that LMPMs and PAMs, which presented outstanding adsorption capability and reusability, could be a good candidate for wastewater purification.

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29

Zhou, Wei, Yu Li, Min Zhang, Guang-Guo Ying, and Yong Feng. "Highly Efficient Degradation of Sulfisoxazole by Natural Chalcopyrite-Activated Peroxymonosulfate: Reactive Species and Effects of Water Matrices." Water 14, no. 21 (October 29, 2022): 3450. http://dx.doi.org/10.3390/w14213450.

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In this study, chalcopyrite (CuFeS2), a natural mineral with a bimetallic structure, was used as the activator to generate radicals for removing organic pollutants from aqueous solutions via the activation of peroxymonosulfate (PMS). Sulfisoxazole (SIX), a sulfonamide antibiotic, was selected as the model pollutant. The results showed that chalcopyrite was highly reactive toward the activation of PMS; under the conditions of 50 µM PMS and 1 g/L chalcopyrite, approximately 95.7% of the SIX was degraded after reaction for only 5 min. An increase in the loading of chalcopyrite (0.25–2 g/L) promoted the degradation of SIX, while elevated levels of PMS (0.05–0.5 mM) slightly retarded the degradation kinetics. Although the best performance was observed under acidic conditions (pHs 3 and 4), near complete degradation of SIX was also achieved at pH 5.5. Identification of reactive species revealed that both a hydroxyl radical and a sulfate radical were formed in chalcopyrite–PMS oxidation, and they were responsible for the degradation of SIX. Trace amounts of copper and iron were leached out from chalcopyrite during the activation, and both the heterogeneous and homogeneous activation of PMS contributed to the generation of oxidizing radicals. Common water constituents including Cl−, HCO3− and natural organic matter at their environmentally relevant levels showed a limited effect on the degradation of SIX, which suggests that chalcopyrite–PMS oxidation has high reactivity and stability in the degradation of organic pollutants and shows great practical application potential.

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Ismail, Rifky, Tezara Cionita, Wong Ling Shing, Deni Fajar Fitriyana, Januar Parlaungan Siregar, Athanasius Priharyoto Bayuseno, Fariz Wisda Nugraha, Rilo Chandra Muhamadin, Ramli Junid, and Nor Azam Endot. "Synthesis and Characterization of Calcium Carbonate Obtained from Green Mussel and Crab Shells as a Biomaterials Candidate." Materials 15, no. 16 (August 19, 2022): 5712. http://dx.doi.org/10.3390/ma15165712.

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Green mussel and crab shells are natural sources of CaCO3, which is widely used as a bioceramic for biomedical applications, although they are commonly disposed of in landfills. The improper disposal of green mussel and crab shells can cause environmental pollution, reducing the quality of life in the community. Many studies have reported the preparation of CaCO3 from green mussels and crab shells. However, there are limited studies comparing the characteristics, including the crystal phase obtained, weight percentage (%) of crystal, crystal size, crystal system, and elemental composition of CaCO3 from green mussel shells, crab shells, and commercial CaCO3. The objective of this research was to compare the calcium carbonate properties formed from green mussel (PMS) and crab (PCS) shells to commercial CaCO3. Green mussel and crab shells were crushed to powder and were calcined at 900 °C for 5 h. Precipitated Calcium Carbonate (PCC) was synthesized from calcined green mussel and crab shells using a solution of 2M HNO3, NH4OH, and CO2 gas. The effect of setting parameters on the synthesized product was analyzed using XRD and SEM-EDX methods. This study shows that the chemical composition of PMS is nearly identical to that of commercial CaCO3, where no contaminants were identified. In contrast, PCS has N components other than Ca, C, and O. Furthermore, the predominance of the vaterite crystal phases in PMS and PCS, with respective weight percentages of 91.2% and 98.9%, provides a benefit for biomaterial applications. The crystallite sizes of vaterite in PMS, PCS, and calcite in commercial CaCO3 are 34 nm, 21 nm, and 15 nm, respectively.

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Thai, Tinh, Ales Bernatik, and Petr Kučera. "Air Pollution Associated with Total Suspended Particulate and Particulate Matter in Cement Grinding Plant in Vietnam." Atmosphere 12, no. 12 (December 20, 2021): 1707. http://dx.doi.org/10.3390/atmos12121707.

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Air pollution associated with suspended particles has become a significant concern in Vietnam recently. The study aimed to (1) investigate dust sources; (2) measure concentration levels of Total Suspended Particulate (TSP), Particulate Matter (PM) fractions; (3) identify silica levels and the correlation with respirable particles at a cement grinding plant in Vietnam. A total of 312 samples (52 TSP, 160 PMs) at 13 processes were measured using the direct-reading dust meter. The silica composition was analyzed in a certified laboratory using the X-ray fluorescence (XRF) technique. SPSS version 26 for Window was used to analyze the data. The operations of the cement grinding plant created multiple dust sources from the jetty to the cement dispatch process. The TSP levels ranged 0.06–38.24 mg m−3, and 40.38% (n = 21) TSP samples exceeded the Permissible Exposure Limit (PEL) for an 8-h working shift. Besides that, there was a wide range and significant concentration levels of PMs in the cement processes. The levels of PMs were PM1 (0.00–0.06 mg m−3), PM2.5 (0.01–0.83 mg m−3), PM4 (0.02–4.59 mg m−3), PM7 (0.03–16.94 mg m−3), and PM10 (0.04–26.85 mg m−3). The highest mean levels of PMs factions were measured at the pre-grinding process. The inefficient operation of the dust collector contributed a significant factor to the dust dispersion in this process. The silica’s mean (SD) composition in respirable dust was 20.4% (0.86) and was not significantly different amongst the processes. There was a significant correlation between the levels of respirable dust and silica exposure in the cement grinding plant (r = 0.99). The improvement of indoor air quality is needed to prevent health effects on cement workers.

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Kim, Sung-Cheol, Kyoung-Wook Kim, and Chun-Hee Woo. "A Study on Power Control using PMS." Transactions of the Korean Institute of Electrical Engineers P 65, no. 3 (September 1, 2016): 194–98. http://dx.doi.org/10.5370/kieep.2016.65.3.194.

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Ali, Noreen, Ashfaq Ahmad Khan, Muhammad Wakeel, Ijaz Ahmed Khan, Salah Ud Din, Saeed Ahmad Qaisrani, Abdul Majid Khan, and Muhammad Usman Hameed. "Activation of Peroxymonosulfate by UV-254 nm Radiation for the Degradation of Crystal Violet." Water 14, no. 21 (October 29, 2022): 3440. http://dx.doi.org/10.3390/w14213440.

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Water is a precious natural resource. Unfortunately, bodies of water become polluted by waste, such as untreated wastewater and detritus, along with oil spills, with minimum or no consideration for their limited capacity to renew themselves. Among these pollutants, dyes are harmful as they are persistent and not biodegradable in nature. The present study demonstrates the removal of crystal violet (CV), a toxic cationic dye, by using three systems: Peroxymonosulfate (PMS), UV-254 nm radiation and UV/P5MS. The effects of various parameters, such as the effects of the initial dose of crystal violet, initial concentration of PMS, pH, typical inorganic ions, etc., were also investigated. The effect of pH was investigated in the range of 1.92–12.07. Similarly, the effect of various anions such as NO2•−, HCO3•−, CO3•2−, SO4•2− and CH3COO•− was investigated for the degradation of target pollutants. The order of degradation of crystal violet was UV/PMS > PMS > UV with removal efficiencies of 97%, 76% and 42%, respectively, at reaction times of 60 min. The degradation of crystal violet was enhanced significantly at a pH range of 10.52–12.07. Electrical energy per order (EE/O) values for UV/PMS, PMS and UV were calculated to be 1.68, 3.62 and 48.96 KWh/m3/order, respectively. The addition of inorganic ions inhibited the removal of CV in the order of SO4•2− > NO2•− > HCO3•− > CO3•2− > CH3COO•−. Moreover, the kinetic studies on the degradation of CV by the UV-254 nm, PMS, and UV/PMS systems, were also carried out and found to follow pseudo-first-order kinetics. The study revealed that oxidation processes are most efficacious for the removal of organic dyes from wastewater.

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Jia, Daqing, Khalil Hanna, Gilles Mailhot, and Marcello Brigante. "A Review of Manganese(III) (Oxyhydr)Oxides Use in Advanced Oxidation Processes." Molecules 26, no. 19 (September 22, 2021): 5748. http://dx.doi.org/10.3390/molecules26195748.

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The key role of trivalent manganese (Mn(III)) species in promoting sulfate radical-based advanced oxidation processes (SR-AOPs) has recently attracted increasing attention. This review provides a comprehensive summary of Mn(III) (oxyhydr)oxide-based catalysts used to activate peroxymonosulfate (PMS) and peroxydisulfate (PDS) in water. The crystal structures of different Mn(III) (oxyhydr)oxides (such as α-Mn2O3, γ-MnOOH, and Mn3O4) are first introduced. Then the impact of the catalyst structure and composition on the activation mechanisms are discussed, as well as the effects of solution pH and inorganic ions. In the Mn(III) (oxyhydr)oxide activated SR-AOPs systems, the activation mechanisms of PMS and PDS are different. For example, both radical (such as sulfate and hydroxyl radical) and non-radical (singlet oxygen) were generated by Mn(III) (oxyhydr)oxide activated PMS. In comparison, the activation of PDS by α-Mn2O3 and γ-MnOOH preferred to form the singlet oxygen and catalyst surface activated complex to remove the organic pollutants. Finally, research gaps are discussed to suggest future directions in context of applying radical-based advanced oxidation in wastewater treatment processes.

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&NA;. "PMS studies have limitations." Inpharma Weekly &NA;, no. 927 (March 1994): 21. http://dx.doi.org/10.2165/00128413-199409270-00052.

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Kagaya, Hitoshi. "Peripheral Magnetic Stimulation（PMS）." Japanese Journal of Rehabilitation Medicine 59, no. 5 (May 18, 2022): 461–66. http://dx.doi.org/10.2490/jjrmc.59.461.

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37

Brown, Walter A. "PMS: A Quiet Breakthrough." Psychiatric Annals 26, no. 9 (September 1, 1996): 569–70. http://dx.doi.org/10.3928/0048-5713-19960901-08.

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&NA;. "Prospective vaccine for PMS." Inpharma Weekly &NA;, no. 896 (July 1993): 13. http://dx.doi.org/10.2165/00128413-199308960-00030.

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Phillips, Antoinette S., and Arthur G. Bedeian. "PMS AND THE WORKPLACE." Social Behavior and Personality: an international journal 17, no. 2 (January 1, 1989): 165–74. http://dx.doi.org/10.2224/sbp.1989.17.2.165.

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Surprisingly, few studies have been reported regarding the effects of premenstrual syndrome (PMS) in the workplace. Given the increasing number of working women, it is important to ask whether PMS has any significant effect on work behavior. The purpose of this review is to consider selected PMS research in order to integrate the more relevant work-related findings and suggest how employers might best use this knowledge.

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&NA;. "PMS studies have limitations." Reactions Weekly &NA;, no. 491 (March 1994): 2. http://dx.doi.org/10.2165/00128415-199404910-00002.

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Hassan, Ismail, Khaled MK Ismail, and Shaughn O'Brien. "PMS in the perimenopause." British Menopause Society Journal 10, no. 4 (December 2004): 151–56. http://dx.doi.org/10.1258/1362180042721111.

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&NA;. "PROZAC FOR SEVERE PMS." American Journal of Nursing 100, no. 3 (March 2000): 13. http://dx.doi.org/10.1097/00000446-200003000-00004.

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Langley, Michael. "PMS and the Workplace." Employee Assistance Quarterly 4, no. 1 (December 19, 1988): 45–56. http://dx.doi.org/10.1300/j022v04v01_04.

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Tempel, Rose. "PMS in the Workplace." AAOHN Journal 49, no. 2 (February 2001): 72–78. http://dx.doi.org/10.1177/216507990104900203.

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Stephenson, J. "Fruit Extract for PMS." JAMA: The Journal of the American Medical Association 285, no. 6 (February 14, 2001): 725—a—725. http://dx.doi.org/10.1001/jama.285.6.725-a.

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Stephenson, Joan. "Fruit Extract for PMS." JAMA 285, no. 6 (February 14, 2001): 725. http://dx.doi.org/10.1001/jama.285.6.725-jwm10001-2-1.

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Zondag-Coulier, SBM, JAH Eekhof, and A. Knuistingh Neven. "Premenstrueel syndroomanticonceptie depressie pms." Huisarts en Wetenschap 45, no. 11 (November 2002): 184–86. http://dx.doi.org/10.1007/bf03082829.

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Facharztmagazine, Redaktion. "Hochkonzentrierter Mönchspfeffer gegen PMS." gynäkologie + geburtshilfe 27, no. 6 (December 2022): 67. http://dx.doi.org/10.1007/s15013-022-5078-5.

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Tang, Shoufeng, Jiachen Tang, Deling Yuan, Zetao Wang, Yating Zhang, and Yandi Rao. "Elimination of humic acid in water: comparison of UV/PDS and UV/PMS." RSC Advances 10, no. 30 (2020): 17627–34. http://dx.doi.org/10.1039/d0ra01787f.

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Cameron, Julie, and Julie Banks. "Women with learning disabilities and PMS women with learning disabilities and PMS." Learning Disability Practice 2, no. 2 (July 1999): 17–19. http://dx.doi.org/10.7748/ldp.2.2.17.s14.

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