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2023

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Olive Oil And Hydration Based On Clinical Assessment And Transepidermal Water Loss: A Systematic Review, Ni Made Ayu Nadia Paramitha Jaya, Melyawati Hermawan, Regina Regina Dec 2023

Olive Oil And Hydration Based On Clinical Assessment And Transepidermal Water Loss: A Systematic Review, Ni Made Ayu Nadia Paramitha Jaya, Melyawati Hermawan, Regina Regina

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: Dry skin or xerosis is a layer of skin that loses moisture due to increased transepidermal water loss (TEWL). Olive oil, one of the most commonly available moisturizers, is often used to keep the skin hydrated. Skin hydration indicates the amount of water in the stratum corneum. This systematic review aimed to determine the association between olive oil application and skin hydration based on clinical assessment and TEWL parameters.

Methods: The research design used was a systematic review based on the criteria of preferred reporting items for systematic reviews and meta-analyses (PRISMA). This systematic review search used …


The Effect Of Bakuchiol In The Skin Aging Process: A Systematic Review, Olivia Jovina Priyanto, Yosef Ferdinand Rahmat Sugiyanto, Darryl Samuel Salim Dec 2023

The Effect Of Bakuchiol In The Skin Aging Process: A Systematic Review, Olivia Jovina Priyanto, Yosef Ferdinand Rahmat Sugiyanto, Darryl Samuel Salim

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: With aging, the skin gradually loses its structural and morphological coherence, decreasing its function. With aging and chronic ultraviolet (UV) exposure, the skin becomes thin and loses elasticity, and wrinkles, pigmentation, and texture irregularities appear. Today, people of all ages become interested in the cosmetic industry, aiming to make their skin appropriate to their age or look younger. Bakuchiol is a pure meroterpene phenol found mainly in the seeds of the Indian plant Psoralea corylifolia (babchi). It triggers antioxidant and anti-inflammatory activity and has anti-aging properties like retinol. The study aimed to know the effect of bakuchiol on …


Favorable Benefits Of Autologous Serum Therapy In Chronic Spontaneous Urticaria, Sanjana Agrahara Shantharaju, Amrita Hongal, Diksha Gupta, Girishma Jonnagadla Dec 2023

Favorable Benefits Of Autologous Serum Therapy In Chronic Spontaneous Urticaria, Sanjana Agrahara Shantharaju, Amrita Hongal, Diksha Gupta, Girishma Jonnagadla

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: In chronic spontaneous urticaria (CSU), autologous serum therapy (AST) is an alternative treatment modality that provides promising benefit of extended relief period without side effects and economic burden of pills. This study aimed to assesses the efficacy of AST in CSU patients irrespective of their autologous serum skin test (ASST) result.

Methods: Patients were enrolled based on inclusion and exclusion criteria after taking written informed consent. A detailed history and clinical examination & relevant investigations were done. ASST was performed and irrespective of the test result AST was given to all study subjects that included weekly intramuscular …


A 61-Year-Old Filipino Man With Lichen Planus Concomitant With Cicatricial Alopecia, Mimicking Discoid Lupus Erythematosus, Lie Michelle E. Harris, Benedicto Dl Carpio, Eileen Regalado-Morales, Amelita Tanglao-De Guzman, Armelia Lapitan-Torres Dec 2023

A 61-Year-Old Filipino Man With Lichen Planus Concomitant With Cicatricial Alopecia, Mimicking Discoid Lupus Erythematosus, Lie Michelle E. Harris, Benedicto Dl Carpio, Eileen Regalado-Morales, Amelita Tanglao-De Guzman, Armelia Lapitan-Torres

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: Lichen planus (LP) is an idiopathic inflammatory disease affecting the skin, mucous membranes, hair, and nails. Even though rare, LP may also present as cicatricial alopecia or a condition referred to as lichen planopilaris (LPP). On the other hand, lupus erythematosus (LE) is an autoimmune disorder with a possibility of systemic involvement. Classical discoid lupus erythematosus (DLE) is the most common form of LE and has a hallmark of scarring alopecia.

Case Illustration: A 61-year-old Filipino man presented with a 7-month history of persistent multiple erythematous hairless scarring plaques on the scalp with multiple erythematous–violaceous to hyperpigmented …


Application Of Multicultural Literature In The Early Childhood Classroom, Deborah Wheeler, Jennifer Hill Dec 2023

Application Of Multicultural Literature In The Early Childhood Classroom, Deborah Wheeler, Jennifer Hill

Journal of English Learner Education

Culture equates to identity; therefore, the implementation of multicultural literature in the early childhood curriculum is an essential method for securing children’s concept of self and cultural identity. This qualitative study explored the implementation of multicultural literature in early childhood classrooms, and the research included questions pertaining to multicultural literature training, instructional methods, and barriers encountered. The purpose of the study was to answer questions regarding teachers use of multicultural literature in the classroom, how often teachers read multicultural literature and how teachers integrated multicultural literature into instruction. An additional question inquired about what multicultural books titles were teachers reading …


Language, Cultural Knowledge, And Privileged Practices: A Case Study Of Understandings That Shape Family Engagement For Parents Of Spanish-English Emergent Bilinguals, Alissa Blair Dec 2023

Language, Cultural Knowledge, And Privileged Practices: A Case Study Of Understandings That Shape Family Engagement For Parents Of Spanish-English Emergent Bilinguals, Alissa Blair

Journal of English Learner Education

This research examines the ways in which parents of Spanish-English emergent bilinguals perceive and navigate the implicit and explicit expectations for family engagement through analysis of contrasting case studies of focal students from two 4th grade classrooms, one characterized by English-medium instruction and the other by a developmental bilingual program. One case sheds light on the language barriers that hampered parents’ participation in their children’s education at school, while the other case highlights discrepancies in the understandings of parental and teacher roles and expectations. Findings demonstrate that parents’ capacity to meet school-based expectations was constrained by assumptions about their …


Best Practices For English Learners With Disabilities In Us Schools – A Systematic Review, Samiratu Bashiru, Jennifer E. Smith Dec 2023

Best Practices For English Learners With Disabilities In Us Schools – A Systematic Review, Samiratu Bashiru, Jennifer E. Smith

Journal of English Learner Education

This systematic review investigated best practices for enhancing academic achievement among English Learners with Disabilities (ELDs) in US schools. By examining 17 peer-reviewed articles and comparing them to the CEC 2014 Quality Indicators, the study identifies significant practices, including culturally responsive methods, technology integration, evidence-based strategies, addressing service delivery challenges, and improving assessment tools. This review has limitations related to inconsistent terminology and highlights the need for standardized language and continued research. It recommends integrating culturally responsive practices, leveraging technology, and refining inclusive assessment tools. This review provides educators, policymakers, and researchers insights, emphasizing ongoing teacher development and policy alignment …


"Our Students Vs. Their Students:" Perceptions Of Teachers In English Language Learning, Leah Day Dec 2023

"Our Students Vs. Their Students:" Perceptions Of Teachers In English Language Learning, Leah Day

Journal of English Learner Education

The purpose of the study was to understand the perceptions of teachers on English Language Learners and how this shapes the educational paths of students. Data was collected in the form of interviews with the participants. The interviews were guided by a set of questions that were designed to interrogate perceptions and experiences with regard to language learning in the context of one student. Interviews were recorded and transcribed and the data was coded inductively. This study does not seek to generalize beyond this context but can provide insight into similar experiences and perceptions of the English Language Learning process. …


Asset-Based Teaching; Uncover, Cultivate, And Empower Students’ Uniqueness, Stephanie K. Knight, Marjaneh Gilpatrick, Tracy Vasquez Dec 2023

Asset-Based Teaching; Uncover, Cultivate, And Empower Students’ Uniqueness, Stephanie K. Knight, Marjaneh Gilpatrick, Tracy Vasquez

Journal of English Learner Education

As instructors who are in tune with their learners learning and communication styles as well as their family and cultural backgrounds, it makes sense that they view their students’ skills and abilities from an asset-based lens. This article provides the readers with some tactics on how to develop and nurture that growth mindset.

When we consider the assets students bring to individual classrooms, the teaching becomes more personalized and relevant to their learning needs. By implementing these teaching practices, instructors are uncovering, cultivating, and empowering their students’ unique abilities. Ultimately students are able to apply their knowledge, skills, and abilities …


Contemplation, Nayda Parisio Poldiak Dec 2023

Contemplation, Nayda Parisio Poldiak

HCA Healthcare Journal of Medicine

Before embarking on a busy workday, take a moment to appreciate the sunrise. Living near the beach is a privilege that reminds me that you can find the calm necessary to face the demands of your role as a division research director through a few minutes of meditation during your commute. The footprints in the sand symbolize the work accomplished with residents, faculty, and staff the previous day. The pier represents the strength of remaining stable even amidst turbulent waves, which symbolize the ever-changing requests and priorities. The rising sun embodies self-energy and excitement for another day, knowing that “above …


On The Discontinuation Of Enteral Feeding In Head And Neck Cancer: A Case Report, Kyle Fisk, Ana Sanchez Dec 2023

On The Discontinuation Of Enteral Feeding In Head And Neck Cancer: A Case Report, Kyle Fisk, Ana Sanchez

HCA Healthcare Journal of Medicine

Introduction

The goal of palliative care is to preserve the quality of life or patient “comfort” in patients with serious diseases. Palliative care providers serve a wide range of patients: from those who seek curative treatment to those who are actively dying. Given this range, palliative care must mirror the dynamic goals of the patient at different stages of life and treatment. Throughout these stages, a goal of the palliative care provider would be to avoid hastening death; however, this often leads to clinical decisions that directly pit the patient’s comfort against the patient’s life span. This is most salient …


Lazarus Syndrome After Aortic Aneurysm Repair, Kevyn Niu, Jamie Lee Aldakkour, Charles Huyghues-Despointes, Yizhi Lin Dec 2023

Lazarus Syndrome After Aortic Aneurysm Repair, Kevyn Niu, Jamie Lee Aldakkour, Charles Huyghues-Despointes, Yizhi Lin

HCA Healthcare Journal of Medicine

Introduction

Lazarus syndrome is defined as the spontaneous return of circulation after cessation of cardiopulmonary resuscitation (CPR). Though there have been multiple cases of Lazarus syndrome documented in the literature, it is a significantly underreported phenomenon with less than 100 cases reported in the literature since the first case in 1982.

Case Presentation

After elective aortic aneurysm repair, an 88-year-old with a do-not-resuscitate directive had cardiac arrest, briefly showing post-mortem respiration and pulse. Despite resuscitation efforts including pharmacological intervention and CPR, he passed away within an hour. This case highlights complexities in end-of-life care and warrants exploration of post-mortem physiological …


A Rare Case Of Candida Glabrata Cervical Spondylodiscitis, Angelina Hong, Lily Hyungjung Lim, Ali Tariq Alvi, Pallavi Aneja Dec 2023

A Rare Case Of Candida Glabrata Cervical Spondylodiscitis, Angelina Hong, Lily Hyungjung Lim, Ali Tariq Alvi, Pallavi Aneja

HCA Healthcare Journal of Medicine

Introduction

Invasive candidiasis can lead to numerous life-threatening sequelae. Candida glabrata is the second-most common causative species of invasive candidiasis. This species possesses a high risk for persistent infection and candidemia. An uncommon complication of invasive candidiasis is spondylodiscitis and can rarely affect the cervical spine.

Case Presentation

The patient is a female in her late 50s with a complex medical history inclusive of chronic obstructive pulmonary disease, chronic pain, multiple abdominal surgeries, prolonged intensive care unit admission, and administration of total parenteral nutrition and broad-spectrum antibiotics who presented with complaints of worsening neck pain. She was last hospitalized 3 …


Impact Of Psychiatry Clerkship Rotation In Attitudes Towards Mental Illness And Psychiatry As A Career Among Medical Students, Jae Kim, Brian Blum, Shivani Kaushal, Sara Khan, Patrick Hardigan, Clara Alvarez Villaba Dec 2023

Impact Of Psychiatry Clerkship Rotation In Attitudes Towards Mental Illness And Psychiatry As A Career Among Medical Students, Jae Kim, Brian Blum, Shivani Kaushal, Sara Khan, Patrick Hardigan, Clara Alvarez Villaba

HCA Healthcare Journal of Medicine

Background

Stigma associated with mental illness (MI) permeates many professions, including healthcare. Recognizing and correcting bias is critical in delivering impartial and beneficial healthcare for all patients. Early educational interventions providing exposure to individuals with MI have shown to be effective at reducing MI stigma. The primary aim of our study was to assess the impact of a psychiatry clerkship on attitudes to MI. A secondary aim was to determine if the psychiatry clerkship influenced medical students’ perceptions of psychiatry as a career.

Methods

A cohort of third-year medical students in Florida was invited to complete an online survey before …


Significance Of Chronic Kidney Disease On Morbidity And Mortality In Hospitalized Patients With Covid-19, Varsha Suresh, Alexis Finer, Aarushi Varshney, Kay Thi Khine, Ishak Mansi, Abdo Asmar Dec 2023

Significance Of Chronic Kidney Disease On Morbidity And Mortality In Hospitalized Patients With Covid-19, Varsha Suresh, Alexis Finer, Aarushi Varshney, Kay Thi Khine, Ishak Mansi, Abdo Asmar

HCA Healthcare Journal of Medicine

Background

Patients with comorbid illnesses are at risk for worse outcomes with a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2; COVID-19). Our research examined patients with chronic kidney disease (CKD) to establish whether it remains an independent risk factor for mortality and morbidity in patients with COVID-19.

Methods

We conducted a retrospective cohort study using an electronic patient database in 2020. An observational dataset from 149 hospitals comprising a United States-based health system (HCA Healthcare) was analyzed. Hospitalized patients (N=11 086), aged 18 and above, with a COVID-19 polymerase chain reaction positive result between January 1, 2020, and September 1, …


Engaging Chief Medical Officers To Improve Multidisciplinary Rounds, Gregory Mccormack, Pranav C. Mehta Dec 2023

Engaging Chief Medical Officers To Improve Multidisciplinary Rounds, Gregory Mccormack, Pranav C. Mehta

HCA Healthcare Journal of Medicine

Background

Multidisciplinary rounds (MDRs), a model of care in which multiple members of the care team, representing different disciplines, come together to discuss the care of a patient in real-time. MDRs are a valuable tool for clinical teams to improve patient length of stay (LOS), reduce healthcare-associated infections, and increase care coordination. HCA Healthcare’s data science and performance improvement teams created a data visualization tool called Next-gen Analytics for Treatment and Efficiency (NATE) Tempo to support care teams in managing rounds and barriers.

Methods

A pilot implementation of MDRs using the NATE Tempo tool was initiated in 10 hospitals, accompanied …


Factors Influencing The Occurrence Of Rework In Terms Of Risk-Based Communication Management In Construction Projects, Virani Mayniana, Rossy Armyn Machfudiyanto Dec 2023

Factors Influencing The Occurrence Of Rework In Terms Of Risk-Based Communication Management In Construction Projects, Virani Mayniana, Rossy Armyn Machfudiyanto

Smart City

Rework in a construction project is an unplanned and unwanted activity that requires an action to repeat part or all the work to meet project standards or requirements and, in its implementation, causes increased work, time, and costs. Based on previous studies that discuss the factors that cause rework, poor communication management or coordination between stakeholders is one of the causes of rework. Therefore, a literature study was conducted to identify project communication management risks that allow rework to occur and resulted in 54 communication management risk factors. Furthermore, the results of the literature study were validated by experts who …


Comparison Of The Effects Of The Three Methods Of Massage, Selected Yoga Exercises And Massage-Yoga Combination On The Depression In Elderly Women, Elham Piri, Behnam Ghasemi, Ali Shafizadeh Dec 2023

Comparison Of The Effects Of The Three Methods Of Massage, Selected Yoga Exercises And Massage-Yoga Combination On The Depression In Elderly Women, Elham Piri, Behnam Ghasemi, Ali Shafizadeh

Baltic Journal of Health and Physical Activity

Introduction: The present study aims to compare the effects of massage, selected yoga exercises and massage-yoga combination methods on symptoms of depression. Materials and Methods: According to the research criteria, 60 available samples were selected and randomly divided into three experimental groups and single control one. The Beck Depression Inventory was completed by the examinees before the intervention, two months after its beginning and one month after ending. Each experimental group received one of the massage interventions, selected yoga exercises and massage-yoga combination for eight weeks, three sessions per week and for a period of 40 minutes per session. The …


Effects Of Attending To A 12-Week Structured Physical Activity Program On Fitness And Self-Perception Levels Of Obese Primary Schoolchildren, Yetkin Utku Kamuk, Spiridon Kamtsios Dec 2023

Effects Of Attending To A 12-Week Structured Physical Activity Program On Fitness And Self-Perception Levels Of Obese Primary Schoolchildren, Yetkin Utku Kamuk, Spiridon Kamtsios

Baltic Journal of Health and Physical Activity

Introduction: Childhood obesity is a major health problem especially for schoolchildren both physically and mentally. The study was conducted to assess the effects of the structured physical activity (PA) program on the physical fitness (PF) and self-perception levels of obese schoolchildren. Materials and Methods: A total of 67 students aged 9-11 were recruited and the experimental group (n = 27) was attended to exercises once per week for 60 mins for 12 weeks. Self-perception Scale for Children and PF tests were applied as pre- and post-tests. Results: 12-week PA sessions improved obese schoolchildren’s self-perception levels in general self-worth, athletic …


Mental Health Effects Of The Covid-19 Pandemic On Aging Lesbian, Gay, Bisexual, Transgender, And Queer Populations., Iliza Minaya, Samuel Raine, Arkene Levy, Chasity B O'Malley Dec 2023

Mental Health Effects Of The Covid-19 Pandemic On Aging Lesbian, Gay, Bisexual, Transgender, And Queer Populations., Iliza Minaya, Samuel Raine, Arkene Levy, Chasity B O'Malley

HPD Articles

INTRODUCTION: The COVID-19 pandemic affected numerous subpopulations of people in unique ways. This study evaluated the impact of the COVID-19 pandemic on the mental health status of Broward County's aging lesbian, gay, bisexual, transgender, and queer (LGBTQ) seniors and identified strengths, weaknesses, and opportunities for interventions to enhance positive mental health outcomes. The study was performed from April 2021 through July 2021.

METHODS: Online surveys measuring anxiety, depression, social support, and resilience were delivered by email to 47 residents of Wilton Manors, Florida. Study data were collected and collated using research electronic data capture tools with bivariate analysis using the …


(Special Section, Hymns Beyond The Congregation Ii): Whither Christian Soldiers? Metaphor And Momentum In The Midtwentieth-Century Reception Of A Victorian Hymn, Jonathan Hicks Dec 2023

(Special Section, Hymns Beyond The Congregation Ii): Whither Christian Soldiers? Metaphor And Momentum In The Midtwentieth-Century Reception Of A Victorian Hymn, Jonathan Hicks

Yale Journal of Music & Religion

There are few more explicit documents of the interconnection of hymnody, mobility, and coloniality than the 1939 film Stanley and Livingstone. Directed by the American duo of Henry King and Otto Brower, much of the picture was filmed “on location” in the British-controlled territories of Kenya, Uganda, and Tanganyika (now part of Tanzania). The film tells the real-life story of a New York journalist (Stanley) searching for a Scottish missionary (Livingstone) and eventually finding him in a town on the north-eastern shore of Lake Tanganyika. One scene in particular—where Stanley finds Livingstone leading his hosts in a rendition of …


(Special Section, Hymns Beyond The Congregation Ii): “We’Ll Understand It Better By And By:” Nomenclature, Negotiation, And Naming Our Neighbors, Emmett G. Price Iii Dec 2023

(Special Section, Hymns Beyond The Congregation Ii): “We’Ll Understand It Better By And By:” Nomenclature, Negotiation, And Naming Our Neighbors, Emmett G. Price Iii

Yale Journal of Music & Religion

Hymns, whether composed for religious contexts or as expressions of spiritual reflection, are historically revered for their redemptive nature. For generations, Black Hymnody has cried out for Christological interventions to end shambolic and systemic oppression against Black people. The vicious murder of George Perry Floyd, Jr. on May 25, 2020 reverberated and initiated, as a catalyst, an overdue global awakening that sparked a catalytic moment for conversations too long deferred. Conversations that question how we experience and name things; how we negotiate trauma; and how we engage one another as neighbors. In many ways, the redemptive nature of hymns has …


Cover And Contents Dec 2023

Cover And Contents

Turkish Journal of Chemistry

No abstract provided.


Accelerated Iron Valence Cycling In Fenton System Using Activated Hydrogen Enhanced By Mil-100(Fe) Modified By Nano-Pd0 Particle, Yun-Dong Wang, Yi-Jun Chen, Mei-Na Cheng, Xin Liu Dec 2023

Accelerated Iron Valence Cycling In Fenton System Using Activated Hydrogen Enhanced By Mil-100(Fe) Modified By Nano-Pd0 Particle, Yun-Dong Wang, Yi-Jun Chen, Mei-Na Cheng, Xin Liu

Turkish Journal of Chemistry

In this paper, a novel Fenton reaction system which was called MHACF-MIL-100(Fe) was constructed. In this system, based on active hydrogen-accelerated FeIII reduction, the hydroxyl radical was continuously produced with a trace amount of total iron. The MIL-100(Fe) modified with the nano-Pd0 particle could be used to activate the H2. Under normal temperature and pressure, the target organic pollutants, such as sulfamethazine and 4-chloro phenol, could be degraded fast. In the condition of initial aqueous solution pH 3, 2 g L–1 dosage of MIL-100(Fe) catalyst loaded with nano-Pd0, Pd/MIL-100(Fe), 20 mM 30 wt% hydrogen peroxide, 25 μM ferrous chloride and …


Synthesis Of Silane- And Quaternary Ammonium-Bearing Copolymers And Application As A Coating Resin On Cotton Fabric, Ayşe Marti̇n, Nazgül Güler, İlknur Yerli̇, Hande Hançer, Tüli̇n Özbek, Tarik Eren Dec 2023

Synthesis Of Silane- And Quaternary Ammonium-Bearing Copolymers And Application As A Coating Resin On Cotton Fabric, Ayşe Marti̇n, Nazgül Güler, İlknur Yerli̇, Hande Hançer, Tüli̇n Özbek, Tarik Eren

Turkish Journal of Chemistry

In this study, silane and quaternary ammonium functional methacrylate monomers were synthesized and used to construct a copolymer using an emulsion polymerization technique to control the reaction rate. The copolymer was then designed using different ratios of silane and quaternary ammonium groups to investigate the relationship between the structure and properties. The presence of the ethoxy silane group in the copolymer series provided covalent bonding through the silanol group onto cotton fabric. The presence of cationic groups also helped to cover the fabric surface. After coating the cotton textile fabric, the resistance of the dye on the fabric surface to …


Polypyrrole Fabricated Laponite Rd Conductive Nanocomposites: Influence Of Grafting Efficiency On Structural And Conductive Properties, Shafiq Ur Rehman, Shaista Taimur, Asif Raza, Tariq Yasin Dec 2023

Polypyrrole Fabricated Laponite Rd Conductive Nanocomposites: Influence Of Grafting Efficiency On Structural And Conductive Properties, Shafiq Ur Rehman, Shaista Taimur, Asif Raza, Tariq Yasin

Turkish Journal of Chemistry

In the present work novel conductive organic-inorganic nanocomposites were produced by grafting of pyrrole monomer onto silanized Laponite RD utilizing emulsion graft polymerization. Influence of some important factors like concentration of monomer, initiator and surfactant were investigated on grafting efficiency. Grafting of polypyrrole chains onto modified Laponite RD was verified by Fourier transform infrared spectroscopy (FT-IR). Scanning electron microscope (SEM) revealed the spherical particles of nanocomposite with average diameter of 271.5 nm. XRD pattern showed that molecular framework of pure polypyrrole almost remains same in nanocomposite. Surface area and pore volume of Laponite RD, measured by Brunauer-Emmett-Teller (BET) analysis, was …


Phytochemical Investigation On The Aerial Parts Of Veratrum Versicolor F. Viride Nakai And Their Biological Activities, Seong Su Hong, Jae Yeon Lee, Yeon Woo Jeong, Ji Eun Lee, Yun-Hyeok Choi, Wonsik Jeong, Eun-Kyung Ahn, Chun Whan Choi, Il Ho Ahn, Joa Sub Oh Dec 2023

Phytochemical Investigation On The Aerial Parts Of Veratrum Versicolor F. Viride Nakai And Their Biological Activities, Seong Su Hong, Jae Yeon Lee, Yeon Woo Jeong, Ji Eun Lee, Yun-Hyeok Choi, Wonsik Jeong, Eun-Kyung Ahn, Chun Whan Choi, Il Ho Ahn, Joa Sub Oh

Turkish Journal of Chemistry

Veratrum spp. have traditionally been used in folk medicine to treat various pathologies. In this study, nine compounds, comprising one simple phenolic compound (1), three stilbenoids (2–4), and five flavonoids (5–9), were isolated from the aerial parts of Veratrum versicolor f. viride Nakai. The structures of these compounds were elucidated by spectroscopic analyses and comparison with reported data. Together, all reported compounds were isolated from V. versicolor f. viride for the first time in the study. Among them, two flavone aglycone tricetins (7 and 9) have never been isolated from the genus Veratrum or the family Melanthiaceae. The ethanol extract …


Extraction/Transportation Of Co2+ Metal Ions With Bis(2-Ethylhexyl) Phosphate Dissolved In Kerosene Using A Multidropped Liquid Membrane Technique, Volkan Demi̇rel, Ramazan Donat Dec 2023

Extraction/Transportation Of Co2+ Metal Ions With Bis(2-Ethylhexyl) Phosphate Dissolved In Kerosene Using A Multidropped Liquid Membrane Technique, Volkan Demi̇rel, Ramazan Donat

Turkish Journal of Chemistry

The transport properties of Co2+ ions from the aqueous donor phase to aqueous acceptor phase with the recently developed multidroplet liquid membrane (MDLM) extraction system were studied. This system serves as a continuous process for the transportation of ions and requires fewer reagents for starting and conducting the procedure. Moreover, the procedure results in fewer waste chemicals and mixtures in comparison to traditional extraction methods. During extraction, bis(2-ethylhexyl) phosphate (D2EHPA) was used as a carrier material and 5% potassium thiocyanate (KSCN) solution was used to obtain a colored complex for UV-Vis detection. By means of several experiments, the optimum D2EHPA …


Optimum Pyrolysis Conditions To Prepare The Most Crystalline Boron Carbide Powder From Boric Acid–Mannitol Complex Ester, Abdullah Devri̇m Pekdemi̇r, Müşerref Önal, Yüksel Sarikaya Dec 2023

Optimum Pyrolysis Conditions To Prepare The Most Crystalline Boron Carbide Powder From Boric Acid–Mannitol Complex Ester, Abdullah Devri̇m Pekdemi̇r, Müşerref Önal, Yüksel Sarikaya

Turkish Journal of Chemistry

A weak acidic complex ester (CE) in solid form was prepared by a condensation reaction between very weak boric acid (BA: H3BO3) and (D)-mannitol (MA: C6H14O6) by the molar ratio of BA/MA = 2. A boron carbide (B4C) precursor was obtained from heating of the CE at 400 °C for 4 h. The precursor was pyrolyzed under argon flow in the interval of 1300–1550 °C for 4 h and at 1400 °C for 1–4 h, respectively. The materials were examined using several techniques such as X-ray diffraction analysis, thermal analysis, scanning electron microscopy, particle size distribution, and nitrogen adsorption/desorption. The …


Sustainable Graphitic Carbon From Biomass To Be Suitable For Technological Devices, Gökçen Akgül Dec 2023

Sustainable Graphitic Carbon From Biomass To Be Suitable For Technological Devices, Gökçen Akgül

Turkish Journal of Chemistry

Technological devices are mostly manufactured by conductive and semiconductive materials. As advancement in the last decades, carbon nanomaterials have been explored in electrical/electronic technology due to their unique performances for manufacturing developing, and prudential miniaturized and flexible electrical/electronic devices. In the era of sustainable and clean carbon technology; renewable, alternative, biodegradable, and eco-friendly new carbon resources are required. Biomass could be the answer to offer inspiring carbon allotropes from nature to be suitable for developing electrical/electronic devices. In this article, deriving of the technological carbonaceous material from biomass, studies although they are very limited in the literature on obtaining the …