Differentiation between 3,4- and 4,15-Epoxyeudesmanolides by Electrospray Ionization Tandem Mass Spectrometry by Herbert Júnior Dias, Ricardo Stefani, José Carlos Tomaz, Ricardo Vessecchi, Antônio Eduardo Miller Crotti

“…We investigated the fragmentation of the eudesmanolide-type sesquiterpene lactones 1α-(4-hydroxymethacryloyloxy)-3α,4α-epoxy-8α-hydroxyeudesm-11(13)-6α,12-olide (1) and 1α-(2,3-epoxyangeloyloxy)-4α,15-epoxy-8α-hydroxyeudesm-11(13)-6α,12-olide (2) by electrospray ionization tandem mass spectrometry (ESI-MS/MS). The elimination of the different ester substituent at C(1) directly from protonated 1 and 2 (A) led to the formation of two regioisomer product ions B (A − RCO2H). …”
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Models for plasmasphere and plasmatrough density and average ion mass including dependence on L, MLT, geomagnetic activity, and phase of the solar cycle by Richard E. Denton, Kazue Takahashi, David P. Hartley

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Multistage Fragmentation of Ion Trap Mass Spectrometry System and Pseudo-MS3 of Triple Quadrupole Mass Spectrometry Characterize Certain (E)-3-(Dimethylamino)-1-arylprop-2-en-1-ones: A Comparative Study by Ali S. Abdelhameed, Adnan A. Kadi, Hatem A. Abdel-Aziz, Rihab F. Angawi, Mohamed W. Attwa, Khalid A. Al-Rashood

“…A new approach was recently introduced to improve the structure elucidation power of tandem mass spectrometry simulating the MS3 of ion trap mass spectrometry system overcoming the different drawbacks of the latter. …”
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Smart manufacturing paradigms in the context of industry 4.0: Bibliometric analysis by El Assad Nouhaila, Dachry Abdelmounaime, Fouraiji Hicham, Dachry Wafaa, Messaoudi Najat

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RELIGIOUS COMMUNICATION IN THE CONTEXT OF CULTURE MEDIA by Maria S. Petrushkevych

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The Relationship of Body Composition and Sleep Quality with VO2max in Adolescent Athletes at Sidoarjo Sports High School and Sewon 1 High School by Fathirani Mutiara, Rahadyana Muslichah, Mirza Hapsari Sakti Titis Penggalih

Subjects: “…percentage of fat mass…”
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RELIGIOUS COMMUNICATION IN THE CONTEXT OF CULTURE MEDIA by Maria S. Petrushkevych

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Associations of Subjective Social Status with Physical Activity and Body Mass Index across Four Asian Countries by Leah Frerichs, Terry T.-K. Huang, Duan-Rung Chen

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Stability Control Mechanism of High-Stress Roadway Surrounding Rock by Roof Fracturing and Rock Mass Filling by Fuzhou Qi, Zhanguo Ma, Dangwei Yang, Ning Li, Bin Li, Zhiliu Wang, Weixia Ma

“…With fracturing roof, the peak vertical stress of coal pillar was 9.3 MPa and the peak vertical stress of virgin coal rib was 13.4 MPa. The fractured rock mass in the gob expanded in volume and provided supporting resistance to the overlying strata, which relieved stress concentrations in the coal pillar. …”
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Liquid chromatography-tandem mass spectrometry for the quantification of ripretinib and its metabolites DP-5439 in human plasma by Jiahui Lin, Jiahui Lin, Aiting Jiang, Juntao Zheng, Jingjing Wu, Hao Li, Hao Li, Shirong Cai, Yulong He, Xiao Chen, Guoping Zhong, Ke-Jing Tang, Ke-Jing Tang, Xinhua Zhang, Yanzhe Xia

“…In this study, a simple and stable liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was attempted to be established and validated for pharmacokinetic studies of ripretinib and its metabolite DP-5439 and therapeutic drug monitoring in human plasma.MethodRipretinib and DP-5439 were separated by chromatography using a Thermofisher Hypersil GOLDTM C18 HPLC column. …”
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EVALUATING THE IMPACT OF MASS TOURISM ON THE HOSPITALITY INDUSTRY AND TOURISM DESTINATION DEVELOPMENT OF CROSS RIVER STATE, NIGERIA by Nnana Okoi OFEM, Chinasa UTTAH, Ndem Samuel ETIM, Queen Olubukola AYENI, Josephat Owan EMEKA, Agnes Awoli EWURU, Maxwell-Borjor Achuk EBA, Eja Iwara EJA, Jeremiah ABANBESHIE, Daniel Daniel JAMES, Ayuk Awunghe ACHU, Michael Takim OTU, Fidelis Ngaji AKWAJI, Etta Oyen ETTA

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Longitudinal association between food frequency and changes in body mass index: a prospective cohort study by Antonio Bernabe-Ortiz, Rodrigo M Carrillo-Larco

“…Objectives Analysing data of the Young Lives Study in Peru, we aimed at assessing the association between daily food frequency and body mass index (BMI) changes between 2006 and 2016.Design Secondary analysis of a prospective ongoing cohort study.Setting 20 sentinel sites in Peru.Participants Children enrolled in the younger cohort of the Young Lives Study. …”
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Ectopic Thyroid Mass Separately Present in Mediastinum and Not a Retrosternal Extension: A Report of Two Cases by Abdul Ahad Sohail, Syed Shahabuddin, Moghira Iqbaluddin Siddiqui

“…Retrosternal extension of goiter is one of the most common types of masses in the superior mediastinum. These types of goiters classically present with compressive symptoms such as dyspnea, dysphonia, dysphagia, or sleep apnea. …”
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A Giant Pedunculated Urothelial Polyp Mimicking Bladder Mass in a Child: A Rare Case by Mehmet Kaba, Sultan Kaba, Tacettin Yekta Kaya, Hüseyin Eren, Necip Pirinççi

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Association between the triglyceride glucose body mass index and asthma: evidence from NHANES 2011–2018 by Sijia Yu, Shiping Wu, Shouxin Wei

“…The triglyceride-glucose body mass index (TyG-BMI) is a novel biomarker used to evaluate insulin resistance; however, limited research exists on the relationship between TyG-BMI and asthma. …”
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On the transitory performance of mixed convective heat and mass transfer around spherical region in the presence of fluctuating streams by Hossam A. Nabwey, Sahar Anwar, Muhammad Ashraf, A.M. Rashad

Subjects: “…Heat and mass transfer…”
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Changement climatique et atrophie des masses glaciaires : quelles mutations pour les paysages islandais ? by Marie Chenet, Erwan Roussel

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Tandem Mass Spectrometry Detection of Quorum Sensing Activity in Multidrug Resistant Clinical Isolate Acinetobacter baumannii by Kok-Gan Chan, Huey Jia Cheng, Jian Woon Chen, Wai-Fong Yin, Yun Fong Ngeow

“…With the use of biosensor and high resolution liquid chromatography tandem mass spectrometry, the AHL production of clinical isolate A. baumannii 4KT was studied. …”
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Hydrophilic Interaction Liquid Chromatography-Tandem Mass Spectrometry Analysis of Fosetyl-Aluminum in Airborne Particulate Matter by Francesca Buiarelli, Patrizia Di Filippo, Carmela Riccardi, Donatella Pomata, Riccardo Marsiglia, Carla Console, Daniele Puri

“…Herein, we present a selective liquid chromatography-tandem mass spectrometry (LC-MS/MS) method to analyze residues of fosetyl-A1 in air particulate matter. …”
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Study on the Key Technology of Controlling the Instability of Deep High-Stress Coal and Rock Mass and Relieving the Danger by Zhijing Zhang, Jianghong Zuo, Dongji Lei

“…The results show the following. (1) The pressure relief effect of the hydraulic cavity on surrounding coal decreases with the increase of distance, and the pressure relief effect is most obvious at 1.0∼2.5 m, in the range of 2.5–3.5 m around the hydraulic drilling hole, the duration, rate, and amplitude of pressure relief are reduced compared with those in the range of less than 2.5 m, while in the range of more than 3.5 m, the effect of pressure relief is very weak. (2) During the period of hydraulic cavitation release hole, the radius of water supply to coal seam is within 1.5 m, which accounts for 79% of coal wall area. (3) It is also a process where the stress distribution in the coal and rock body needs to be rebalanced before and after hydraulic caverning, which is often accompanied by microfracture of coal and rock mass. The analysis shows that, before hydraulic caverning, the waveform of coal and rock fracture signal has a short duration, large amplitude, and obvious signal mutation, and the dominant frequency of the signal is about 250 Hz, with large total energy. …”
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