Digital Commons Network^™

Synthesis Of Corrosion Inhibitors Based On (Thio)Urea, Orthophosphoric Acid And Formaldehyde And Their Inhibition Efficiency, Abror Nomozov, Khasan Beknazarov, Sakhomiddin Khodjamkulov, Zafar Misirov, Sarvinoz Yuldashova

Baghdad Science Journal

In this article, the optimal conditions for the synthesis of two types of oligomeric corrosion inhibitors, polymethylene diamidophosphate (PDAF-1) and polymethylene thiodiamidophosphate (PTAF-2), based on compounds such as thiourea, urea, and orthophosphoric acid containing nitrogen and phosphorus, as well as their formulas, are determined. At first, (thio)diamidophosphate - PDAF-1 brand corrosion inhibitor was synthesized using urea and orthophosphoric acid in a 2:1 mol ratio at a temperature of 135–140°C. The second type of polymethylene thiodiamidophosphate (PTAF-2) corrosion inhibitor was synthesized based on the process of condensation in an aqueous environment at a temperature of 60°C, by adding formaldehyde to this …

Synthesis, Diagnosis As Well As Biological Activity Studies Of Some Metal Ion Complexes Of Schiff Bases Derived From 4-Aminoantipyrine, Amera F. Mohammed, Israa A. Saeed, Khansaa Sh. Al-Nama

Baghdad Science Journal

Polydintate Schi base ligands L1 = orthohydroxy aniline, 4-aminoantipyrin-(N,N¯ benzilidene) and L2 = 5-Chloro- 2-hydroxyaniline,4-aminoantipyrine-(N,N¯) benzilide obtained from condensation of benzil and 4-aminoantipyrine with 2-aminophenol or 2-amino 4-chlorophenol in (1:1:1) molar ratio for each component. Ligands employed to synthesis complexes in the general molecular formula [ML1Cl]Cl and [ML2]Cl2 respectively; M=Mn(II), Co(II), Ni(II) and Zn(II). To diagnose the ligands and the complexes the following techniques were adopted: UV-Visible FTIR and 1H-NMR spectroscopies, micro elemental analyses of metal ions and carbon, hydrogen and nitrogen, molar conductivity and magnetic susceptibility. Measurements obtained from the conductivity which was done with DMSO solution indicated that …

Modification And Study Biological Activity Of Chitosan With Compounds Containing Azo Group, Ruwaidah S. Saeed, Huda A. Hassan, Muna S. Al-Rawi

Baghdad Science Journal

In the present research synthesis and study of biological activity a series of new polymers modified of chitosan with compounds containing azo group. Beginning diazonium salt produced from 3,30-dimethyl-[1,10-biphenyl]-4,40-diamine reacted with concentrated HCl acid and sodium nitrite. The coupling reaction between diazonium salt with substituted aromatic aldehyde to produce Azo derivatives (1-6). Azo Schi bases Chitosan (7-12) were synthesized by condensation of Chitosan with Azo derivatives (1-6) in ethanol with some drops of glacial acetic acid. The structural modifications of Chitosan ring (linked to a bioactive azo moiety) were expected to give new derivatives (7-12) with a diverse range of …

Synthesis Of Some New Hydrazide-Hydrazone And Heterocyclic Compounds Thiophene, Imine, Coumarin And Pyrazole Derivatives, Istabrick M. Al-Mola, Ammar H. Al-Sabawi

Baghdad Science Journal

A series of new thiophene, imine, coumarin and pyrazole derivatives X4-X16 were synthesized from N-(1-(4- (benzylsulfonyl)phenyl)ethylidene)-2-cyanoacetohydrazide X3 as a starting material with di erent reagents (tetralone, cyclopentanone, cycloheptanone, 2-hydroybenzaldehyde, 2-hydroxy-1-naphthaldehyde, CS2 and phenylisothiocyanate). The compound X3 was synthesized by the reaction of 4-(benzylsulfonyl)acetophenone with 2-cyanoacetohydrazide under reflux in ethanol. The structures of all synthesized compounds were confirmed by (FT-IR, 1H-NMR, and 13C-NMR).

Liquid Phase Extraction And Determination Of Chromium (Iii) Ion In Aqueous Solution Using Dithiocarbamate Derivative Reagent, Ivan Malik Shaker, Ahmed Fadhil Khudhair, Hayder Hamied Mihsen

Baghdad Science Journal

The new reagent N-methyl-N-((((4-bromophenyl)diazenyl)thio) carbonothioyl) aniline was made by the reaction of (sodium N-methyl-N-phenyldithiocarbamate)with 4-bromobenzenediazoniume salts. UV-Visible spectroscopy, elemental analysis, Fourier-transform infrared spectroscopy, mass spectroscopy, proton nuclear magnetic resonance spectroscopy, carbon-13 nuclear magnetic resonance spectroscopy, magnetic susceptibility measurements, and conductivity measurements to characterize the prepared compound. Using analytical and spectroscopic data, stoichiometry was calculated, and it was discovered that the complex was 1:2 (metal: ligand). The complexes’ molar conductivity was measured using dimethyl formide, and the results indicated that the produced complex was ionic. Results of elemental analysis and spectrum studies indicate that the compound has a tetrahedral structure. Cloud …

Synthesis, Antibacterial, Molecular Docking, And Ademt Studies Of New Mannich Bases Of Curcumin, Athra G. Sager, Jawad Kadhim Abaies, Ammar Ferman Abbood

Baghdad Science Journal

This study introduces an innovative approach employing N-(3-benzylureido)(methyl)-2-(6-methoxynaphthalen-2-yl)propanamide (J10) as an additive for recycled polyethylene terephthalate (PET) to produce thin film (J10-PET thin film), with a focus on their application in the removal of methylene blue (MB) and methyl orange (MO) from aqueous solutions. The study is primarily focused on unraveling the kinetics and equilibrium behaviors governing the removal of MB and MO. The investigation includes the determination of the equilibrium adsorption capacities (Q_e) of MB and MO at different temperatures (308, 323, and 333 K) and concentrations (5, 10, and 15 mg/g). Remarkably, the pseudo-second-order model is …

Green Innovation In Environmental Remediation: J10-Pet Thin Films For Efficient Removal Of Methylene Blue And Methyl Orange Contaminants, Jihan A. Mustafa, Parween H. Saleem, Huda A. Basheer

Baghdad Science Journal

This study introduces an innovative approach employing N-(3-benzylureido)(methyl)-2-(6-methoxynaphthalen-2-yl)propanamide (J10) as an additive for recycled polyethylene terephthalate (PET) to produce thin film (J10-PET thin film), with a focus on their application in the removal of methylene blue (MB) and methyl orange (MO) from aqueous solutions. The study is primarily focused on unraveling the kinetics and equilibrium behaviors governing the removal of MB and MO. The investigation includes the determination of the equilibrium adsorption capacities (Q_e) of MB and MO at different temperatures (308, 323, and 333 K) and concentrations (5, 10, and 15 mg/g). Remarkably, the pseudo-second-order model is …

Palladium (Ii) Mixed Ligand Complexes Of Benzoisothiazol-3(2h)-Dithiocarbamate (Bit-Dtc) And Tertiary Diphosphines: Synthesis, Characterization, Biological And Anticancer Studies, Nazk Mohammed Aziz

Baghdad Science Journal

[Pd(bit-dtc)₂] complex was prepared by the reaction of sodium benzoisothiazol-3(2H)-dithiocarbamate (Nabit-dtc) with sodium tetrachloropalladate(II). Treatment of [Pd(bit-dtc)₂] with one mole equivalent of Ph₂P(CH)_nPPh₂ afforded complexes of the type [Pd(bit-dtc)₂(Ph₂(CH₂)_n PPh₂)] in good yield: n = 1(dppm); n = 2 (dppe), n = 3 (dppp); n = 4 (dppb); n = (C₅H₄)₂Fe (dppf). The prepared complexes were characterized by elemental analysis, I.R., ¹H-{³¹P} and ³¹P-{¹H} NMR spectroscopy the dithiocarbamate …

Synthesis And Characterization Of New Acrylamide Derivatives And Studying Their Antibacterial Activity, Ruaa M. Dhedan, Sana H. Awaad, Suha. N. Fadhl

Baghdad Science Journal

This study aims to test the new derivatives of polymers on the biological activities of two types of bacteria work describes the synthesis of 1,3-oxazepine and self-polymerization via a cycloaddition reaction between Schiff's bases 2-methyl-N-(5-(2-methylbutanoylimino) pentylidene)but-2-enamide and succinic, maleic anhydride. The synthesized compounds were characterized by melting points, softening points, and physical properties such as swelling capacity, TGA, and FT-IR. The biological activity showed intermediate results against two bacterial isolates resistant to antibiotics.

Бадхызские Архивы. Том 2, Р. И. Горелова, В. Я. Фет

Books Published by MU Libraries in MDS

Gorelova, RI, Fet V, editors. The Badkhyz Archives, Vol. 2. Huntington, WV: Marshall University Libraries; 2025. 387 p.

This book represents the second volume of the series started in 2021. It compiles memoirs and research information about the unique Badkhyz Natural Reserve, now in Turkmenistan, formerly at the southernmost point of the USSR. Established in 1941, the Reserve—nicknamed a Serengeti of Central Asia— housed many unique and endangered species, with an iconic wild ass, or kulan, preserved only there. The second volume includes unique and otherwise unavailable information about the workers of the Reserve in 1940s-1980s. We continuento publish …

Building Education System Resilience In Samoa: Exploring Systems, Policies And Classroom Practices, Yung Nietschke, Anna Dabrowski, Nora Warren, Michelle Arasi-Mulitalo

International Education Research

This report presents the findings of research on education system resilience in Samoa during and immediately following the COVID-19 pandemic in order to build a deeper understanding of policies and practices in place, and what lessons can be drawn to support system-wide adjustments to mitigate future school disruptions. Data included case studies of practice, student assessment data and secondary data analysis of the 2018-2021 PILNA surveys for Samoa. The study identified the policies and practices that contribute to the Samoan education system's capacity to respond and recover from crisis and the factors that can drive system resilience, including social, human …

09. Recursion Method, Gerhard Müller

Nonequilibrium Statistical Physics (2025)

Part nine of course materials for Nonequilibrium Statistical Physics (Physics 626), taught by Gerhard Müller at the University of Rhode Island. The available PDF includes both the lecture notes, additional materials, and exercises without solutions.

Gardner-Webb University Hosts Selah Week, A Time For Reflection And Renewal, Office Of University Communications

Gardner-Webb NewsCenter Archive

Gardner-Webb University invites students, faculty, staff, and the surrounding community to participate in Selah Week, happening Feb. 24-28, a time dedicated to spiritual renewal and reflection. Themed “Encountering God,” this event will feature engaging worship services, student and faculty testimonies, and messages designed to inspire personal faith journeys.

The Current - Volume 35 Issue 9, Nova Southeastern University

Student Newspapers

No abstract provided.

Evaluation Of Physical And Chemical Condition Of A Group Of Waterloggedarchaeological Woods From The Yenikapı 16 Shipwreck, Sedef Hetto, Namik Kiliç, Asli Gökçe Kiliç

Turkish Journal of Earth Sciences

This study examined the physical and chemical condition of waterlogged archaeological wood (WAW) samples from the Yenikapı 16 shipwreck of plane (Platanus L.), elm (Ulmus L.), pine (Pinus L.), and fir (Abies L.), representing species with different wood properties. The maximum water content (MWC) and basic density (BD) values of 74 WAW samples from the shipwreck were calculated, and 7 of 74 samples were selected for analysis using scanning electron microscopy (SEM), X-ray fluorescence (XRF), and Fourier transform infrared spectroscopy (FTIR). The availability of samples, appropriate size, the species of the wood, and the wood’s degradation were all considered. The …

Environmental And Cultural Impacts Of The 8.2 Ka Event In Yenikapı (İstanbul/Türkiye), Ayşi̇n Konak, M. Namik Yalçin

Turkish Journal of Earth Sciences

The Neolithic lifestyle, which began in the 12th millennium BP with the emergence of villages in the core region extendingfrom Iran to central and southeastern Anatolia and Syria, began to spread to neighboring geographies, such as the Marmara region,in the 9th millennium BP. During the 8.2 ka event that occurred between 8300 and 7900 BP, cold and dry conditions prevailed in thenorthern hemisphere. During the winter months, the humidity decreased and cooling of about 6 ± 2 °C was observed. In order totest whether the 8.2 ka event was also effective in the İstanbul region, a set of inorganic geochemical …

Coupled Lake-Atmosphere-Land Physics Uncertainties In A Great Lakes Regional Climate Model, William J. Pringle, Chenfu Huang, Pengfei Xue, Jiali Wang, Khachik Sargsyan, Miraj Kayastha, Et. Al.

Michigan Tech Publications

This study develops a surrogate-based method to assess the uncertainty within a convective permitting integrated modeling system of the Great Lakes region, arising from interacting physics parameterizations across the lake, atmosphere, and land surface. Perturbed physics ensembles of the model during the 2018 summer are used to train a neural network surrogate model to predict lake surface temperature (LST) and near-surface air temperature (T2m). Average physics uncertainties are determined to be 1.5°C for LST and T2m over land, and 1.9°C for T2m over lake, but these have significant spatiotemporal variations. We find that atmospheric physics parameterizations alone are the dominant …

Spectator 2025-02-20, Editors Of The Spectator

The Spectator

No abstract provided.

Self-Thickening Materials Derived From Phenylpropanoid Ene Reactions, Atanu Biswas, Huai N. Cheng, Bret Chisholm, Ryan Beni, Zengshe Liu, Karl Vermillion, Michael Appell, Kelton Forson, Omar El Seoud, Carlucio R. Alves, Roselayne F. Furtado

Chemistry Faculty Research

In this work, we report the observation of uncatalyzed ene reactions between several phenylpropanoid compounds and diethyl azodicarboxylate (DEAD). For allylbenzene, the reaction produces the ene product at molar ratios of up to 1:2 of allylbenzene to DEAD. At higher levels of DEAD, more complex reactions are observed. For the reaction between methyl eugenol and DEAD, similar ene reaction products have been found. However, the reaction of eugenol with DEAD is more complex; in addition to the ene reaction, other reactions happen at the same time. Most of the structures of the resulting products have been elucidated using NMR spectroscopy …

Ancient Mitogenomes Reveal Population Interactions With High Maternal Genetic Diversity In The Central Plains Of China During The Late Neolithic Period, Xiyan Wu, Linyi Nie, Canshuo Zhong, Lin Wang, Rongpeng Jin, Jinteng Liang, Pengxiang Liu, Fan Yang, Ke Chen, Tao Han, Baoxu Ding, Yonggan Fu

Human Biology Open Access Pre-Prints

The Central Plains of China is one of the earliest domestication hubs for broomcorn and foxtail millet. This region nurtured rich archaeological cultures and experienced extensive interactions with neighboring populations during the Neolithic period. However, limited genomic research has hindered a clear understanding of the maternal genetic structure and population expansion history in this era. Here, we report 12 complete mitochondrial genomes from individuals of the Yanzhai site population from Henan province of China during the Longshan Culture period, revealing a high level of maternal genetic diversity. The close genetic distance between these individuals and those of ancient populations from …

There May Be A Safer Treatment Against A Virus That Can Cause Birth Defects And Hearing Loss, Kade Robison

Research on Capitol Hill

CMV is the leading cause of non-genetic birth defects and hearing loss.

Hagfish Protein Models Of Heart Tissue Reveal Processes Of Diabetes, Maelyn Andreasen

Research on Capitol Hill

Diabetic cardiomyopathy impairs and damages heart tissue through chronic exposure to hyperglycemia, or high blood sugar, in diabetic individuals. 

Studying the disease in heart tissue is difficult, so we set out to create a three-dimensional heart model that we can study under these hyperglycemic conditions.

A New Crispr System Uses Energy Storage Indiscriminately, Brendon Guinn

Research on Capitol Hill

CRISPR systems are Immune systems used by bacteria to defend against viruses. Recently, tools such as CRISPR Cas9 that are derived from CRISPR systems have been developed as a powerful tool to treat disease. 

Here we are studying a different CRISPR system related to the one used to develop the Cas9 tool. We study this system to discover new proteins that may be used to develop tools to cure diseases and diversify our arsenal of disease-fighting genetic sequences. 

Genetic Engineering In Alpacas May Unlock Cures For Currently Incurable Human Disease, James Cisneros

Research on Capitol Hill

We aimed to establish laparoscopic ovum pickup (L-OPU) techniques in alpaca to retrieve oocytes for in vitro maturation and fertilization. Our project successfully retrieved and matured alpaca oocytes in vitro, a crucial step toward genetic engineering. Next, we will apply CRISPR-Cas9 to deactivate the IGM gene in fertilized embryos, aiming to enhance HCAb production. This will lay the foundation for humanizing these antibodies, making them viable for therapeutic use in human medicine.

Coy W Waller Distinguished Lecture, University Of Mississippi. School Of Pharmacy

Pharmacy Lecture Series

The School of Pharmacy established the Coy W. Waller Distinguished Lecture in 2004 to recognize Dr. Waller’s contributions to his discipline and the School of Pharmacy. Each year the lecture is hosted by a department within the school. Lecturers are selected for their contributions to the host department’s discipline.

Ronald F Borne Distinguished Lecture, University Of Mississippi. School Of Pharmacy

Pharmacy Lecture Series

In 2005, the Department of Medicinal Chemistry established the Ronald F. Borne Distinguished Lecture in Medicinal Chemistry to recognize Dr. Borne’s contributions to the department. The lectures are delivered by scholars in the fields of medicinal chemistry and synthetic drug discovery.

Impacts Of Ocean Acidification On The Palatability Of Two Antarctic Macroalgae And The Consumption Of A Grazer, Hannah E. Oswalt, Margaret O. Amsler, Charles D. Amsler, James B. Mcclintock, Julie B. Schram

Faculty, Staff, and Students

Increases in atmospheric CO2 have led to more CO2 entering the world’s oceans, decreasing the pH in a process called ’ocean acidification’. Low pH has been linked to impacts on macroalgal growth and stress, which can alter palatability to herbivores. Two common and ecologically important macroalgal species from the western Antarctic Peninsula, the unpalatable Desmarestia menziesii and the palatable Palmaria decipiens, were maintained under three pH treatments: ambient (pH 8.1), near future (7.7) and distant future (7.3) for 52 days and 18 days, respectively. Discs of P. decipiens or artificial foods containing extracts of D. menziesii from each treatment were …

Black Women Healing From Gender-Based Violence: Christ-Centered Approaches For Transformative Holistic Wellbeing, Tanya Jahwar

Doctor of Ministry

The Women’s Leadership and Resource Center states, “Gender-based violence against Black women has always existed in the US. From historical accounts of chattel slavery to analyses of present-day society, Black women have endured multiple forms of violence including labor …, sexual …, medical … and … exploitation.”³² This dissertation will provide important research about gender-based violence against Black women and girls and will conclude with Christ-centered approaches for transformative holistic wellbeing. Do laws that prevent violence enable more violence? In the fact sheet published by the National Black Women’s Justice Institute, it is noted that, “Experiences of abuse do …

Automated Detection Of Reduced Ejection Fraction Using An Ecg-Enabled Digital Stethoscope: A Large Cohort Validation, Ling Guo, Gregg S. Pressman, Spencer N. Kieu, Scott B. Marrus, George Mathew, John Prince, Emileigh Lastowski, Rosalie V. Mcdonough, Caroline Currie, John N. Maidens, Hussein Al-Sudani, Evan Friend, Deepak Padmanabhan, Preetham Kumar, Edward Kersh, Subramaniam Venkatraman, Salima Qamruddin

Einstein Health Papers

BACKGROUND: Asymptomatic left ventricular systolic dysfunction (ALVSD) affects 7 million globally, leading to delayed diagnosis and treatment, high mortality, and substantial downstream health care costs. Current detection methods for ALVSD are inadequate, necessitating the development of improved diagnostic tools. Recently, electrocardiogram-based algorithms have shown promise in detecting ALVSD.

OBJECTIVES: The authors developed and validated a convolutional neural network (CNN) model using single-lead electrocardiogram and phonocardiogram inputs captured by a digital stethoscope to assess its utility in detecting individuals with actionably low ejection fractions (EF) in a large cohort of patients.

METHODS: 2,960 adults undergoing echocardiography from 4 U.S. health care …

Lowell Hardin: Mentor Extraordinaire, Larry L. Murdock, Thomas W. Hertel, Gebisa Ejeta

Purdue University Press Books

Lowell Stewart Hardin (1917–2015), an Indiana farm boy who became an enormously influential international agriculturalist, made the world a better place for the poor and the hungry on this earth. For seventeen years he led the Ford Foundation’s agricultural development efforts, contributing to the Green Revolution. He helped to found and guide international agriculture research centers in Africa, Asia, and Latin America. He inspired others to get involved and opened doors for them. He taught by example, gave others credit, and always stepped back, avoiding the limelight himself. In this volume, twenty-two people who knew him well share stories of …