Table of Content

Open Access Original Research

Adapted Time Slice Model of Pinch Analysis for Direct-Indirect Heat Recovery in Buildings

Received: 13 January 2022;  Published: 12 April 2022;  doi: 10.21926/jept.2202013

Abstract

Heat integration techniques such as pinch analysis can play a significant role in saving energy in the design of buildings. The application of pinch analysis in this sector encounters difficulties due to the highly time-dependent behavior of energy streams such as waste heat and solar thermal collectors, as well as the possible need for heat storage units (HSUs). The existing pinch models in the literature either bear little relation to reality because they ignore the time dependency of the streams, or they do not [...]

1408 10778

Open Access Research Article

Integrating the Complementary Therapies of Energy Psychology and Dreamwork – the Dream to Freedom Method

Received: 25 January 2022;  Published: 05 July 2022;  doi: 10.21926/obm.icm.2203024

Abstract

The purpose of this paper is to demonstrate that the integration of dreamwork and Energy Psychology (EP) can enhance outcomes in the treatment of a range of psychological disorders. The therapeutic process often begins with a peeling away of emotional layers until underlying issues surface. When utilizing dreamwork, however, it is possible to begin at a deeper level. Because dreams address salient unresolved emotional conflicts, dreamwork can quickly bring into consciousness previously unconscious emotional issues [...]

1228 10777

Open Access Case Report

Cerebellopontine Angle Glioblastoma with Concurrent Spinal Cord Involvement: A Case Report and Review of Literature

Received: 12 November 2018;  Published: 04 January 2019;  doi: 10.21926/obm.neurobiol.1901018

Abstract

Objective: To report a unique case of cerebellopontine angle glioblastoma with concurrent spinal cord involvement. Background: Glioblastoma (GBM) is the most common primary malignancy of the central nervous system (CNS), comprising 46.6% of all CNS malignancies. By anatomic location, cerebellopontine angle (CPA) GBMs are exceedingly rare. To our knowledge, the following case represents the tenth reported case of CPA GBM and the first with a corresponding spinal cord tumor on presentation. Methods: Retrospective cha [...]

1551 10770

Open Access Original Research

Visible-Light-Induced Formation of Aromatic Ketones: A Metal-Free C−H Oxygenation Process in Air under Room Temperature

Received: 01 April 2022;  Published: 10 May 2022;  doi: 10.21926/cr.2202014

Abstract

The process of light-induced C-H oxygenation is of high interest as it can be used for the construction of oxygenated compounds. Herein, we report a mild and general method for the efficient synthesis of aromatic ketones following the process of metal-free C-H oxygenation. With air as the oxidant, high functional tolerance was demonstrated, and the desired ketones were obtained in moderate to excellent yields at room temperature (25 oC). Mechanistic studies suggested that the oxidative transformation potentially oc [...]

1587 10766

Open Access Research Article

Phase Equilibrium in ZrO2-CeO2-Eu2O3 System at a Temperature of 1500 °C

Received: 24 May 2021;  Published: 02 September 2021;  doi: 10.21926/rpm.2103036

Abstract

The phase equilibria and structural transformations in the ternary ZrO2-CeO2-Eu2O3 system at 1500 °C were studied by X-ray diffraction and scanning electron microscopy in the overall concentration range. The system was found to constitute fields of solid solutions based on the tetragonal (T) modification of ZrO2, cubic (C) and monoclinic (B) modifications of Eu2O3, cubic with a fluorite-type structure (F) modifications of CeO2 (ZrO2), and ordered intermediate phase with a pyrochlore-type structure of Eu2Zr2O [...]

1965 10763

Open Access Review

FISH-Based Analysis of Mosaic Aneuploidy and Chromosome Instability for Investigating Molecular and Cellular Mechanisms of Disease

Received: 08 February 2019;  Published: 20 March 2019;  doi: 10.21926/obm.genet.1901068

Abstract

Recently, numerous studies have reported convincing data suggesting that chromosome instability may be not only a trigger of cancers but a possible mechanism for a wide spectrum of brain diseases. According to our original experience, chromosome instability is commonly observed during karyotyping of children with neuropsychiatric diseases and congenital malformations. To understand mechanisms of non-cancerous diseases potentially mediated by chromosome instability, which may represent an important target for molecu [...]

1876 10762

Open Access Original Research

‘A Way of Being in the World’: An Exploration of the Experience of Developing Self-Compassion through Online Training

Received: 21 September 2021;  Published: 23 November 2021;  doi: 10.21926/obm.icm.2104050

Abstract

Compassion Focused Therapy (CFT) has increasingly been shown to have a positive impact for people experiencing a range of difficulties, and online self-help formats could provide a way of increasing its accessibility and scalability. This study explored adult participants’ subjective experiences of engaging with online self-compassion training drawn from Compassionate Mind Training (CMT) and CFT. Semi-structured interviews were conducted with 15 participants who had completed online self-compassion training, [...]

1480 10761

Open Access Original Research

Thermokinetic and Thermodynamic Parameters for Catalytic Pyrolysis of Medium Density Fiber over Ni/Beta Zeolite

Received: 31 August 2022;  Published: 02 November 2022;  doi: 10.21926/cr.2204038

Abstract

Catalytic pyrolysis is an attractive alternative for converting biomass into energy and chemicals to replace fossil sources. This has encouraged the search for efficient catalysts that can directly remove oxygenated products during pyrolysis, since they are the main problem in the processing and use of the products obtained. The catalytic and non-catalytic pyrolysis of medium density fiber (MDF) over beta zeolite-supported nickel (3 and 5%) was performed using the biomass/catalyst of 1.0/0.2 ratio. The thermokineti [...]

1993 10756

Open Access Editorial

Depression and Aging: Role of Social Support

Received: 25 March 2019;  Published: 28 March 2019;  doi: 10.21926/obm.geriatr.1901042

Abstract

Depression and Aging: Role of Social Support

1899 10755

Open Access Research Article

NaY Zeolite Synthesis from Vermiculite and Modification with Surfactant

Received: 24 October 2023;  Published: 26 December 2023;  doi: 10.21926/cr.2304031

Abstract

This work focuses on preparing NaY zeolite using alternative sources of silica and modifying the zeolite with the surfactant cetyltrimethylammonium bromide. Two different hydrothermal synthesis routes were employed: the conventional method using sodium silicate as the silica source, and the other is a sustainable approach using vermiculite clay as the silica source. In traditional zeolite synthesis, sodium silicate is often used as the source of silica. However, . The vermiculite was subjected to an acid treatment, [...]

1939 10751

Open Access Original Research

Feasibility Study on the Use of Modified Copper Slag as a Sustainable Fine Aggregate in Mortar

Received: 09 March 2021;  Published: 02 June 2021;  doi: 10.21926/rpm.2102022

Abstract

Depending on the availability of aggregate sources pertaining to their geographic locations, the concrete industry utilizes conventional aggregates such as marine sand, dredged gravel, or crushed rocks. This method requires high energy and high processing costs for washing and grinding. The objective of this work is to use Modified Ferro silicate slag (MFS), a by-product obtained from the copper industry, as an alternative to the conventional fine aggregates found in mortar. No additional processing such as washing [...]

1866 10750

Open Access Research Article

Never Say Never: Unexpected Pulmonary Pathogens Found on Autopsy in Hematopoietic Cell Transplantation Recipients

Received: 03 June 2019;  Published: 29 July 2019;  doi: 10.21926/obm.transplant.1903076

Abstract

Hematopoietic cell transplantation is frequently complicated by infectious disease-related complications, especially pneumonia. Candida and enterococci are often overlooked as pulmonary pathogens with some clinicians firmly believing that these organisms never cause pneumonia. Here, we present a series of five cases of Candida pneumonia and five cases of enterococcal pneumonia found on autopsy in hematopoietic cell transplantation recipients. We will also review the literature regarding the epidemiology, risk facto [...]

1216 10749

Open Access Research Article

New DNA Extraction Method for the Detection of Pneumocystis in Lung Tissue Samples of Colonized Individuals

Received: 30 January 2019;  Published: 18 March 2019;  doi: 10.21926/obm.genet.1901066

Abstract

Background: Pneumocystis jirovecii colonization in patients is associated with a low organism burden, which supports the need to use highly sensitive molecular techniques, such as nested-PCR to determine the presence of the organism. However, few studies have considered the effect of nucleic acid extraction methods on the detection of P. jirovecii. Here, we evaluate how pre-treatment affects microbial detection. Methods: Lung tissue samples from fifteen autopsied infants were processed using two different DNA extra [...]

1842 10745

Open Access Original Research

Production of Fermentable Sugars from Cassava Stem using Hybrid Pretreatment Technology

Received: 29 April 2021;  Published: 14 September 2021;  doi: 10.21926/rpm.2103037

Abstract

One of the crucial steps in the enzymatic hydrolysis of biomass is pretreatment. We investigated the applicability of a hybrid pretreatment method, This involved acid treatment followed by alkali before the production of fermentable sugars from cassava stem. The substrate was initially treated with acid (1% oxalic acid at 100 °C for 2 h), followed by treatment with a 10% NaOH–urea mixture (by mixing 5 g each of NaOH and urea in 100 mL of water) at 100 °C for 1 h. A cellulose recovery of 98.55% was obtained with the [...]

1399 10743

Open Access Original Research

Loneliness Among African Migrants Living in Portugal

Received: 23 January 2022;  Published: 08 June 2022;  doi: 10.21926/obm.neurobiol.2202125

Abstract

This study analyzed the degree of loneliness, as well as acculturation and adaptation factors related to it among African migrants. The study sample consisted of 759 migrants (48.5% females) from four ethnocultural groups (Angolans, Cape Verdeans, Guineans, and Mozambicans) living in Portugal. Participants’ mean age was 37 years, and the mean length of sojourn in this country was 21 years. Participants completed self-reported questionnaires to evaluate social contacts, language proficiency, ethnic identity, perceiv [...]

1462 10729

Open Access Review

What Is the Current Status of Single Lung Transplantation? A Literature Review

Received: 19 September 2024;  Published: 27 April 2025;  doi: 10.21926/obm.transplant.2502248

Abstract

Lung transplantation (LTx) is the gold standard for the surgical treatment of end-stage lung disease. Ongoing discussions persist whether single lung transplantation (SLT) or bilateral lung transplantation (BLT) lead to better patient outcomes and quality of life. This study analyzed 58 peer-reviewed articles from 1990 to 2024, comparing SLT and BLT across several parameters, including indications for transplantation, overall survival, pulmonary hypertension, complications, chronic rejection, functional status, and [...]

988 10729

Open Access Original Research

A Pilot Study of a School-Based Yoga and Mindfulness Program for Girls

Received: 15 August 2024;  Published: 18 March 2025;  doi: 10.21926/obm.icm.2501015

Abstract

Schools have made commendable efforts to incorporate yoga and mindfulness programs to address the wellbeing of students; however, research on the efficacy of school-based yoga and mindfulness programs is still in its infancy, particularly with school-aged students at risk of developing externalizing disorders. Much of the research has also focused on evaluating interventions implemented by researchers, rather than evaluating those implemented by the school and its staff. The aim of this pilot study was to evaluate [...]

1761 10723

Open Access Research Article

Effect of 12 Months of Oral Exercise on the Oral Function of Older Japanese Adults requiring Care

Received: 23 October 2020;  Published: 28 July 2021;  doi: 10.21926/obm.geriatr.2103177

Abstract

Objective: The present study aimed to elucidate the relationship between oral exercise and oral function among older adults requiring care in the nursing facilities of Japan. Methodology: The subjects were adults aged 65 years or above, requiring care and admitted to the nursing facilities for older adults in Japan. The subjects performed the assigned oral exercises, which included the exercises focused on the neck, shoulder, upper limbs, tongue, lips, cheek movement, vocalization, and deep breathing, in groups und [...]

1671 10718

Open Access Review

A Conceptual Model of Dysphagia in Older Adults

Received: 06 August 2024;  Published: 09 December 2024;  doi: 10.21926/obm.geriatr.2404291

Abstract

A conceptual model was developed to create a basis for understanding the risk factors and outcomes associated with dysphagia and to hypothesize the nature of the relationship between certain factors. The conceptual model was developed by two academic speech-language pathologists with ≥10 years research and clinical experience in swallowing and dysphagia in older adults. A comprehensive review of English-language literature was conducted, and relevant, evidence-informed factors associated with dysphagia in older adu [...]

1899 10712

Open Access Research Article

Experimental Effects of Exercise on Forgetting

Received: 06 September 2018;  Published: 17 December 2018;  doi: 10.21926/obm.icm.1804034

Abstract

Background: The present study evaluates the effects of selective directed forgetting (SDF) and directed forgetting (DF) on subsequent memory retrieval and investigate whether acute exercise can facilitate the effects of SDF. Methods: A four-arm (n=20 per group; N=80; Mage=20 yrs), parallel-group, randomized controlled experiment was employed. The four groups included: 1) exercise plus SDF (Ex+SDF), 2) SDF only (SDF), 3) DF only (DF) and 4) R (remember) only (R). Participants viewed two separate word lists (list 1 a [...]

2037 10702

Open Access Review

Benefits of Combined Liver Transplant: Protection or Tolerance?

Received: 18 April 2019;  Published: 04 September 2019;  doi: 10.21926/obm.transplant.1903084

Abstract

The privileged liver, due to its immunological status, is referred to as a tolerogenic organ. However, this alone does not explain the introduction of tolerance after single or combined liver transplantation (kidney, heart, pancreas, and intestine); other factors, such as recipient’s age, donor’s hepatic volume, iron metabolism, biomarkers, or imprint of cytomegalovirus infection, appear to be involved in the identification of patients who are likely to be tolerant to their graft. All the afore-stated factors appea [...]

1748 10692

Open Access Review

Screening and Treating Urinary Incontinence in Primary Care: A Missed Opportunity

Received: 12 May 2023;  Published: 05 October 2023;  doi: 10.21926/obm.geriatr.2304252

Abstract

More than 60% of adult women in the United States have urinary incontinence (UI), with the prevalence increasing to over 80% in women over age 65. Despite its high prevalence, most patients do not seek care and few clinicians screen for UI. The Medicare Health Outcomes Survey queries patients about satisfaction with their provider’s discussion and management of UI, but formal recommendations about screening, diagnosis, and treatment are lacking. This review presents a practical algorithm for primary care providers [...]

1717 10683

Open Access Review

Unraveling the Impact of Modern Technologies on Young Minds: A Comprehensive Study

Received: 22 October 2024;  Published: 13 January 2025;  doi: 10.21926/obm.neurobiol.2501264

Abstract

The implementation of modern technologies has transformed connectivity, information-sharing, and education, significantly influencing students' academic journeys. New technologies offer advantages and disadvantages, particularly impacting young students and leading to changes in habits and behaviors. While technology can improve learning efficiency through personalized approaches, excessive screen time can negatively affect communication and academic performance. Studies recommend limited screen time for children t [...]

1319 10681

Open Access Original Research

Next Generation Sequencing and Pediatric Brain Tumors: Detection of Cancer Predisposition Syndromes in Patients and Their Families

Received: 01 September 2017;  Published: 05 December 2017;  doi: 10.21926/obm.genet.1704011

Abstract

The study “Molecular Neuropathology 2.0” (MNP2.0) offers an integrated histo-molecular diagnosis including the detection of potential therapeutic targets for a large cohort of pediatric patients with primary CNS tumors. After obtaining parental and/or patient consent, in this study germline DNA analysis of all study subjects bridges the gap between scientific genetic analysis and medical care. The study’s workflow takes into consideration the conditions of a multicenter study, legal stipulations, as well as the nee [...]

2090 10677

Open Access Original Research

Effect of Acute Moderate-Intensity Exercise on Autobiographical Episodic Memory and Semantic Memory

Received: 27 April 2019;  Published: 04 July 2019;  doi: 10.21926/obm.icm.1903042

Abstract

Background: The objective of this study was to evaluate the effects of acute moderate-intensity exercise on autobiographical episodic memory and semantic memory. Methods: A two-arm, parallel-group randomized controlled intervention was employed. The experimental group engaged in an acute bout of treadmill exercise for 15 minutes (70% of heart rate max), while the control group engaged in a time-matched seated activity. For episodic autobiographical memory, participants recalled as many personal memories of events f [...]

1928 10677

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