Negative / Null Result ReportOpen accessScience
Ruihan Li, Chuankuan Wang, Chunhua Lv et al. · 2025 · Geoderma
Improvements in stocks and stability of forest soil organic carbon can be achieved through the management of tree species. Given the long lifespan of trees and their role as the keystone species in forested ecosystems, decisions regarding tree species management can have a significant impact on soil carbon balance, with effects that may persist for decades. Here, a common garden experiment involving five temperate tree species in northeast China was conducted to quantify the influence of tree species on soil carbon dynamics, including its fractions (mineral-associated organic carbon, particula
View details →DOI: 10.1016/j.geoderma.2025.117185 Negative / Null Result ReportOpen accessLanguage and Literature
Azza Al-Kendi · 2025 · Languages
This study examines the acoustic properties of vowels in foreigner-directed speech (FDS) in interactions between female Omani-Arabic-speaking employers and their foreign domestic helpers (FDHs). Particularly, it investigates whether Arabic corner vowels /i:/, /a:/, and /u:/ undergo acoustic adaptations in FDS. The study also explores the influence of foreign interlocutors’ psycholinguistic characteristics, such as degree of foreign accent, religion, and length of residence (LoR), on the extent of these adaptations. Data were collected from 22 Omani-Arabic-speaking women interacting with their
View details →DOI: 10.3390/languages10040082 Negative / Null Result ReportOpen accessPsychiatry
Stanley N. Caroff, Fan Mu, Rajeev Ayyagari et al. · 2018 · BMC Psychiatry
Abstract Background Data are limited on the benefits and risks of dose reduction in managing side effects associated with antipsychotic treatment. As an example, antipsychotic dose reduction has been recommended in the management of tardive dyskinesia (TD), yet the benefits of lowering doses are not well studied. However, stable maintenance treatment is essential to prevent deterioration and relapse in schizophrenia. Methods A retrospective cohort study was conducted to analyze the healthcare burden of antipsychotic dose reduction in patients with schizophrenia. Medical claims from six US stat
View details →DOI: 10.1186/s12888-018-1889-2 Negative / Null Result ReportOpen accessGeriatrics
Gary N. Landis, Luke Riggan, Hans S. Bell et al. · 2022 · Frontiers in Aging
Mifepristone dramatically increases the life span of mated female Drosophila while reducing the expression of innate immune response genes. Previous results indicated that mifepristone also reduced the load of aero-tolerant bacteria in mated females. Experiments were conducted to further investigate the possible role of bacteria in mifepristone life span effects. Life span was assayed in flies grown from sterilized eggs on autoclaved media and in normally cultured controls in two independent assays. Sterilization increased mated female life span (+8.3% and +57%, respectively), and the effect o
View details →DOI: 10.3389/fragi.2022.924957 Negative / Null Result ReportOpen accessChemical technology
Fei Xu, Yucong Shi, Bin Li et al. · 2024 · Foods
As a natural flavoring agent, vanilla essential oil has a special aroma and flavor, but its volatility and instability limit its value. Therefore, in this study, vanilla essential oil was compounded with cinnamon essential oil to prepare nano-emulsions (composite nano-emulsions called C/VT and C/VM), and the stability of the composite essential oil emulsions was investigated. Transmission electron microscopy (TEM) images showed that the nano-emulsions were spherical in shape and some flocs were observed in C/VM and C/VT. The results showed that the average droplet sizes of C/VM and C/VT increa
View details →DOI: 10.3390/foods13050801 Negative / Null Result ReportOpen accessNutritional diseases. Deficiency diseases
Zohreh Sadat Sangsefidi, Abbas Ali Sangouni, Faezeh Yarhosseini et al. · 2026 · Journal of Health, Population and Nutrition
Abstract Background Available evidence regarding effect of Cornus mas L. fruit extract (CMFE) as an anthocyanins source on glycemic control, insulin resistance, and adiponectin levels among metabolic dysfunction-associated steatotic liver disease (MASLD) patients is limited and controversial. Thus, this study aimed to assess effect of CMFE on glycemic control, insulin resistance, and adiponectin levels in MASLD patients. Methods This double-blind, randomized controlled clinical trial was carried out among 50 MASLD patients for 12 weeks. The participants were randomly categorized into the CMFE
View details →DOI: 10.1186/s41043-025-01186-6 Negative / Null Result ReportOpen accessPediatrics
Mirhadi Mussavi, Mortaza Ghojazadeh, Samayeh dadakhani · 2022 · Iranian Journal of Neonatology
Background: Intratracheal intubation is associated with many side effects. Different groups of drugs have been used to control these side effects, but there is still no consensus on the most suitable drugs. This study aimed to compare the effect and possible side effects of fentanyl, remifentanil, and atropine plus remifentanil on the vital signs of preterm infants in non-emergency intratracheal intubation. Methods: In this randomized clinical trial study, 75 neonates with a gestational age of 27 to 34 weeks who required temporary intubation were included in the study and divided into three gr
View details →DOI: 10.22038/ijn.2022.64315.2242 Negative / Null Result ReportOpen accessAgriculture
Hongbo YI, Chunyan LIU, Yangyang WEI et al. · 2023 · Guangdong nongye kexue
【Objective】It aims to preliminarily reveal the effect of dietary supplementation with porcine Lactobacillus reuteri LR1 on the expression of intestinal extracellular matrix (ECM) in weaned piglets, providing references for the promotion and application of porcine LR1 in animal husbandry.【Method】One hundred and forty-four Duroc-Landrace-Yorkshire crossbred weaned piglets with similar body weights at 21 days of age were selected and randomly divided into three treatment groups, which were fed a basal diet (control group, CON group), a basal diet supplemented with 75 mg/kg of aureomycin and 100 m
View details →DOI: 10.16768/j.issn.1004-874x.2023.11.002 Negative / Null Result ReportOpen accessMedicine
Sirous Nazari pirdoosti, Vahid Valipour dehnou, Ehsan Gharamanlou · 2019 · Majallah-i Dānishgāh-i ’Ulūm-i Pizishkī-i Īlām
Introduction: Transcranial direct current stimulation (tDCS) is a non-invasive technique used to modify the activity of the cortex of the brain. This form of current is capable of inducing changes in the electrical activity inside and outside of the neurons, which leads to a change in the resting membrane potential and thus improves the efficiency of the neural synapse. Therefore, the aim of this study was to investigate the effect of tDCS over motor cortex on strength and endurance performance of healthy collegiate subjects. Materials & Methods: In total, 10 young and healthy male subjects (a
Negative / Null Result ReportOpen accessMedicine (General)
Heera Lee, Somyeong Hwa, Sunga Cho et al. · 2024 · Medicina
Background and Objectives : Polydeoxyribonucleotides (PDRN), composed of DNA fragments derived from salmon DNA, is widely recognized for its regenerative properties. It has been extensively used in medical applications, such as dermatology and wound healing, due to its ability to enhance cellular metabolic activity, stimulate angiogenesis, and promote tissue regeneration. In the field of dentistry, PDRN has shown potential in promoting periodontal healing and bone regeneration. This study aims to investigate the effects of PDRN on the morphology, survival, and osteogenic differentiation of gin
View details →DOI: 10.3390/medicina60101610 Negative / Null Result ReportOpen accessNeurosciences. Biological psychiatry. Neuropsychiatry
Suwang Zheng, Tianli Fu, Jinlong Yan et al. · 2024 · Journal of NeuroEngineering and Rehabilitation
Abstract Background Temporal interference (TI) stimulation, an innovative non-invasive brain stimulation technique, has the potential to activate neurons in deep brain regions. The objective of this study was to evaluate the effects of repetitive TI stimulation targeting the lower limb motor control area (i.e., the M1 leg area) on lower limb motor function in healthy individuals, which could provide evidence for further translational application of non-invasive deep brain stimulation. Methods In this randomized, double-blinded, parallel-controlled trial, 46 healthy male adults were randomly di
View details →DOI: 10.1186/s12984-024-01336-7 Negative / Null Result ReportOpen accessTheory and practice of education
Muhammet Fatih Alkan, Rukiye Şahin, Ahmet Erdem · 2024 · Educational Academic Research
The new approach in positive psychology is growing rich with the acceptance of life in all aspects and with views on the optimal use of human potential; it is being shaped by a new perspective that can be accepted as a full explanation of not only positive emotion but also of sources and motives of positive emotion, and respect for human. One of the predictors of positive emotion is personality traits. Within this scope, this research aimed at exploring the relationship between personality and eudaimonic well-being. A total of 316 undergraduates participated in the study. The data were collect
View details →DOI: 10.33418/education.1421847 Failed Experiment ReportOpen accessMedicine (General)
Qun Cheng, Xiang‐Yu Fang, Rong‐En Qiu · 2025 · Kaohsiung Journal of Medical Sciences
ABSTRACT Spinal cord injury (SCI) triggers secondary damage, including pain‐induced hypertension, inflammation, and hemorrhage, impairing recovery. This study evaluated the efficacy of general anesthesia with preemptive propofol administration in mitigating secondary damage in SCI rats. SCI was induced in rats using a contusion model. Propofol (100 mg/kg) was administered intraperitoneally either 30 min before (preemptive) or 30 min after intermittent tail shock. Systolic blood pressure (SBP), body weight, food intake, inflammatory markers (interleukin‐1 beta [IL‐1β], interleukin‐6 [IL‐6]), he
View details →DOI: 10.1002/kjm2.70011 Negative / Null Result ReportOpen accessVeterinary medicine
Muneer Wahab Saeed AL-Khafaji · 2016 · Kufa Journal for Veterinary Medical Sciences
The study was conducted on 40 Awassi sheep through the year 2014 from the flock reared in Faculty of agriculture / Kufa University. Five treatments included levels of flax (0.0, 2, 4, 6 and 8) %. Body weight in three ages (live weight at 6month, at 9months and at 12 months) was evaluated using variance analyses. Results showed a significant effect (p≤ 0.05) of flax in live body weight the highest BW6, BW9 and BW12 were in the males group that fed with 8% flax it's about 35.22, 46.06 and 58.22 kg respectively compared with the same level of diet flax in female group it's about 30.81, 37.26 and
View details →DOI: 10.36326/kjvs/2016/v7i14287 Negative / Null Result ReportOpen accessEconomic growth, development, planning
Nora Ria Retnasih, Grisvia Agustin, Dwi Wulandari · 2016 · Jurnal Ekonomi dan Studi Pembangunan
In accordance with the theory of a small open economy, Indonesia including the category of countries whose economies are vulnerable to the effects from another country who has a close working relationship, such as the United States of America (USA). The purpose of this study was to measure the effect of federal funds rate on BI rate; and BI rate implications on exchange rate, economic growth, and consumer price index. This type of research is quantitative. Collecting data using techniques of documentation provided by the Federal Reserve Data (FRED), Bank Indonesia (BI), and Badan Pusat Statist
Negative / Null Result ReportOpen accessAnimal culture
CP Moura, SCB Leite, APA Nogueira et al. · Brazilian Journal of Poultry Science
ABSTRACT Dietary inclusion of lipid sources has been one of the methods adopted by nutritionists aiming at better energy balancing. However, alternative energy feedstuffs have been sought in an attempt to reduce production costs. In this regard, lipid sources that can replace conventional ones, such as beef tallow, cottonseed oil, and sunflower oil have been investigated. The objective of this study was to examine the effects of different lipid sources on the performance, egg quality, biometrics of digestive organs, and bone quality of white-egg commercial layers in the first production cycle.
View details →DOI: 10.1590/1806-9061-2019-1032 Negative / Null Result ReportOpen accessEngineering (General). Civil engineering (General)
Zhenyu Pan, Deyuan Deng, Changsheng Feng et al. · 2022 · Advances in Civil Engineering
In civil engineering, arches, such as steel arch roofs and arch bridges, are often subjected to linear temperature gradient field. It is known that the in-plane instability of parabolic arches is caused by the significant axial force. The arch under the linear temperature gradient field produces complex axial force, and so the instability of arches would be affected by temperature gradient field significantly. However, the analytical solutions of in-plane instability of parabolic arches being subjected to the uniformly distributed vertical load and the temperature gradient field are not solved
View details →DOI: 10.1155/2022/8973013 Negative / Null Result ReportOpen accessVeterinary medicine
Felista Mwangi, Areen Dallasheh, Mugagga Kalyesubula et al. · 2023 · Animals
This study investigated the effect of dietary flavour supplements on the preference, feed efficiency and expression of the sweet taste receptor family 1 members 2 and 3 ( T1R2 + T1R3 ), and sodium-glucose linked transporter 1 ( SGLT1 ) genes in the lambs’ small intestines. Eight, five-month-old, Israeli crossbred Assaf lambs were offered 16 different non-nutritive commercial flavours in rolled barley and ground corn. Capsicum and sucram were the most preferred non-aroma flavours ( p = 0.020), while milky ( p T1R2 , T1R3 and SGLT1 relative gene expression evaluated from the proximal jejunum bio
View details →DOI: 10.3390/ani13081417 Negative / Null Result ReportOpen accessMedical technology
Jinsoo Rhu, Kyo Won Lee, Young Jae Chung et al. · 2019 · Korean Journal of Transplantation
Background : This study aimed to develop and validate the Kidney Transplantation and Quality of Life (KTQoL) questionnaire to evaluate the quality of life (QoL) in Korean kidney transplantation (KT) patients. During the validation, the KTQoL was used to compare the QoL of KT patients before and after conversion from twice-daily to a once-daily regimen of tacrolimus.Methods : Construct and content validity of the 24-item KTQoL was evaluated using factor analysis and a panel of experts, respectively. The questionnaire was validated in 50 KT patients, conducted before and after conversion from tw
View details →DOI: 10.4285/jkstn.2019.33.4.135 Negative / Null Result ReportOpen accessSocial sciences (General)
Karimullah Mohammadi, Mohammad Mahfoz Faqiri · 2026 · Journal of Social Sciences and Humanities
The purpose of this study is to examine the interrelationship among foreign direct investment (FDI), exports, imports, and economic growth in Afghanistan during the period 2002–2023. To achieve this objective, annual time series data and the Autoregressive Distributed Lag (ARDL) econometric model were employed. The estimation results indicate that the negative and statistically significant coefficient of the error correction term (-0.2694) reflects an adjustment speed of approximately 27 percent of short-term deviations in gross domestic product (GDP) toward long-term equilibrium in each perio
View details →DOI: 10.62810/jssh.v3i2.183 Negative / Null Result ReportOpen accessMedicine
Gabriel Danyagri, Qing-Lai Dang · 2013 · PLoS ONE
Global climate change is expected to affect how plants respond to their physical and biological environments. In this study, we examined the effects of elevated CO2 ([CO2]) and low soil moisture on the physiological responses of mountain maple (Acer spicatum L.) seedlings to light availability. The seedlings were grown at ambient (392 µmol mol(-1)) and elevated (784 µmol mol(-1)) [CO2], low and high soil moisture (M) regimes, at high light (100%) and low light (30%) in the greenhouse for one growing season. We measured net photosynthesis (A), stomatal conductance (g s), instantaneous water use
View details →DOI: 10.1371/journal.pone.0076586 Negative / Null Result ReportOpen accessMathematics
Mashhour A. Alazwari, Mohammad Reza Safaei · 2021 · Mathematics
In the present study, a novel configuration of a rotating tube bundle was simulated under non-isothermal hydrodynamic conditions using a mixture model. Eight fins were considered in this study, which targeted the hydrodynamics of the system. An aqueous copper nanofluid was used as the heat transfer fluid. Various operating factors, such as rotation speed (up to 500 rad/s), Reynolds number (10–80), and concentration of the nanofluid (0.0–4.0%) were applied, and the performance of the microchannel heat exchanger was assessed. It was found that the heat transfer coefficient of the system could be
View details →DOI: 10.3390/math9101153 Negative / Null Result ReportOpen accessFinance
Esa Martawati, Samin Samin · 2015 · Ekonomi dan Bisnis
This study aims to examines the effect of firm size and institutional ownership on company performance with debt policy as intervening variable in consumer goods company listed on the Indonesian Stock Exchange. The sample of this research amount 25 consumer goods company listed on the Indonesian Stock Exchange during the period 2008-2011 that were selected by using purposive sampling method. The data used are secondary data from financial statements published by the Indonesian Stock Exchange. The analysis technique used here is path analysis. The result of the research show firm size and insti
View details →DOI: http://dx.doi.org/10.35590/jeb.v2i2.714 Negative / Null Result ReportOpen accessElectrical engineering. Electronics. Nuclear engineering
Bunyarat Umsura, Wanus Srimaharaj, Phakkharawat Sittiprapaporn et al. · 2025 · IEEE Access
Relaxation, which refers to the absence of tension and stress, is important for health because extended periods of tension may lead to illness. This study detected induced relaxation through electroencephalography (EEG) for the real-time monitoring of brain activity. The Multivariate Empirical Mode Decomposition with Dynamic Phase-Synchronized Hilbert-Huang Transform (MEMD-DPS-HHT) algorithm was utilized to extract dynamic brain wave patterns from the EEG data of participants exposed to the blended essential oils. Preprocessing included artifact removal using independent component analysis (IC
View details →DOI: 10.1109/access.2025.3561142 Negative / Null Result ReportOpen accessGeriatrics
Veronika Keppner, Sebastian Krumpoch, Robert Kob et al. · 2023 · BMC Geriatrics
Abstract Background The risk of older adults being injured or killed in a bicycle accident increases significantly due to the age-related decline of physical function. Therefore, targeted interventions for older adults to improve safe cycling competence (CC) are urgently needed. Methods The “Safer Cycling in Older Age” (SiFAr) randomized controlled trial investigated if a progressive multi-component training program related to cycling improves CC of older adults. Between June 2020 and May 2022, 127 community-dwelling persons living in the area Nürnberg-Fürth-Erlangen, Germany aged 65 years and
View details →DOI: 10.1186/s12877-023-03816-2 Negative / Null Result ReportOpen accessPlant ecology
Sabah El-Banna. · 2006 · Journal of Plant Protection and Pathology
The present study was undertaken to investigate the effects of a single (24 h) and repeated (7 days) doses of deltamethrin (10 rngikg body weight daily) on hepatic drug metabolizing enzymes. The hepatic content of microsomal protein, cytochrome P450 and b5. activities of NADPH cytochrome C reductase, amidopyrine N—demethylase. aniline-4shydroxylase. glutathion S-transeferase and the level of thiobarbituric acid reactive substances (TEARS) were determined. The obtained results indicated that a single dose of deltamethrin had no significant effect on hepatic microsomal proteins, cytochrome b5, am
View details →DOI: 10.21608/jppp.2006.235224 Negative / Null Result ReportOpen accessEnvironmental sciences
Pakpahan Novriaman, Maryati Sri, Susanti Desi · 2023 · E3S Web of Conferences
The combination of oleogelators had potential to exploit synergistic effects that contributed to functionality of oleogel. Red palm oil provided high carotenoids which add nutrition to oleogel. This research is aimed to provide high carotenoids oleogel using oleogelators combinations. Stability, oil binding capacity, hardness, thermal profile and total carotenoid were observed to learn oleogelator effect. This study was designed using a factorial completely randomized design consisting of three factors, are concentrations of ethyl cellulose (Ec), monoglycerol stearate (Ms) and beeswax (Bw). Et
View details →DOI: 10.1051/e3sconf/202337304020 Negative / Null Result ReportOpen accessNeurology. Diseases of the nervous system
Jakub Droś, Katarzyna Kowalska, Paulina Pasińska et al. · 2023 · BMC Neurology
Abstract Background Cognitive impairment is a common complication of the acute phase of stroke, which can be transient and resolve while still in the hospital. This study evaluated the prevalence and risk factors for transient cognitive impairment and their impact on long-term prognosis in a population of acute-phase stroke patients. Methods Consecutive patients admitted to a stroke unit with acute stroke or transient ischemic attack were screened twice for cognitive impairment using the parallel version of Montreal Cognitive Assessment: the first time between the first and third day and the s
View details →DOI: 10.1186/s12883-023-03120-x Negative / Null Result ReportOpen accessEducation (General)
Rahmah Johar, Rahmah Johar, M. Ikhsan et al. · 2025 · Frontiers in Education
Mathematical communication skills are essential for helping students grasp mathematical concepts. Fostering students’ knowledge of Islamic values can also encourage them to relate mathematical topics to real-world situations, particularly in worship, enhancing their mathematical communication. Therefore, an innovative teaching approach is crucial to improving students’ mathematical communication and understanding of Islamic values. This study investigates the integration of these concepts within mathematics through the contextualized framework of Qurban. The study explores how an interactive w
View details →DOI: 10.3389/feduc.2025.1633056 Negative / Null Result ReportOpen accessNuclear engineering. Atomic power
Min Ho Lee, Dong Wook Jerng, In Cheol Bang · 2023 · Nuclear Engineering and Technology
The temperature distribution of the reactor pool under natural circulation induced by the RVACS operation was experimentally studied. According to the Bo’ based similarity law, which could reproduce the temperature distribution of the working fluid under natural circulation, SINCRO-2D facility was designed based on the PGSFR. It was reduced to 1 : 25 in length scale, having water as a simulant of the sodium, which is the original working fluid. In general, temperature was stratified, however, effect of the natural circulation flow could be observed by the entrainment of the stratified temperat
View details →DOI: 10.1016/j.net.2023.01.021 