Negative / Null Result ReportOpen accessPhysics
Peter Erwin, Linda S. Sparke · 2002 · arXiv
We present results from an imaging survey of an unbiased sample of thirty-eight early-type (S0--Sa), low-inclination, optically barred galaxies in the field. Our goal was to find and characterize central stellar and gaseous structures: secondary bars, inner disks, and nuclear rings. Bars inside bars are surprisingly common: at least one quarter of the sample galaxies (possibly as many as 40%) are double-barred, with no preference for Hubble type or the strength of the primary bar. A typical secondary bar is ~12% of the size of its primary bar and 240--750 pc in radius. We see no significant ef
Negative / Null Result ReportOpen accessPhysics
D. Apai, M. R. Meyer, P. Hinz et al. · 2007 · arXiv
We present results from two high-contrast imaging surveys that exploit a novel technique, L-band angular differential imaging. Our first survey targeted 21 young stars in the Beta Pic and Tuc-Hor moving groups with VLT/NACO reaching typical sensitivities of 20 AU. The statistical analysis of the null result demonstrates that the giant planet population is truncated at 30 AU or less (90% confidence level). Our second, on-going MMT/Clio survey utilizes the unique sensitivity achieved in the L-band for old planets to probe all M-dwarf stars within 6 pc. The proximity of these targe
Negative / Null Result ReportMedicine
Mohammed Abdul, Bernard, Yates · 2026 · Cureus
Background The optimal choice of polyethylene insert in total knee arthroplasty (TKA) continues to cause contention. Rotating platform bearings (RP) have theoretical advantages but have failed to demonstrate a functional difference…
View details →DOI: 10.7759/cureus.109613 Negative / Null Result ReportMedicine
Geysenbergh, Debrock, Lie Fong et al. · 2026 · Human reproduction (Oxford, England)
Does a natural cycle result in higher clinical pregnancy rates (CPR) with foetal heartbeat compared to an artificial cycle for frozen-thawed embryo transfer (FET) preparation in ovulatory women? The CPR with foetal heartbeat did not differ…
View details →DOI: 10.1093/humrep/deag095 Negative / Null Result ReportMedicine
El-Tanani, Wali, Rabbani et al. · 2026 · Pharmaceuticals (Basel, Switzerland)
In spite of plausible biology, the majority of oncology trials involving drug repurposing have failed to demonstrate any efficacy. Numerous factors can potentially cause failure, including issues with dosing, drug strength, the trial…
View details →DOI: 10.3390/ph19060957 Negative / Null Result ReportOpen accessMicrobiology
Ruliaty Lisa, Amalia Indrian Rizka, Nur Abidin et al. · 2023 · BIO Web of Conferences
This study was aimed to know the effect of hatching and survival rate of milkfish larvae (Chanos chanos) treated with nanosilver. Three concentrations of nanosilver such as 0.25 ppm, 0.5 ppm and 0.75 ppm were applied to culture media at least an hour before stocking. Newly hatched larvae were stocked at the density of 50 pcs l-1, and it was reared for 25 days in 5 m3 of concrete tank. Result of the study found that no significant effect (p>0.05) of the treatments given on hatching rate and survival of milkfish larvae. However, larvae treated with nanosilver tend to gain higher hatching rate (6
View details →DOI: 10.1051/bioconf/20237401015 Negative / Null Result ReportOpen accessNaval architecture. Shipbuilding. Marine engineering
Chenfang Wang, Longxi Han, Yi Zhang et al. · 2023 · Journal of Marine Science and Engineering
The natural dispersion of oil depends on the oil types, wave-mixing energy, and the temperature and salinity of water. Laboratory experiments were conducted to investigate the effects of these factors on oil dispersion. The results demonstrated that the increase in temperature significantly enhanced the oil dispersion efficiency, particularly for low-viscosity oils. At 30 °C, the dispersion efficiency is 2 times higher than that at 15 °C, while salinity has no significant effect on dispersion efficiency. Nonlinear fitting results revealed an exponential increase in dispersion efficiency with t
View details →DOI: 10.3390/jmse12010047 Negative / Null Result ReportOpen accessMedicine
Diptasree Maitra Ghosh, Dinesh Kumar, Sridhar Poosapadi Arjunan et al. · 2017 · PLoS ONE
This study has described and experimentally validated the differential electrodes surface electromyography (sEMG) model for tibialis anterior muscles during isometric contraction. This model has investigated the effect of pennation angle on the simulated sEMG signal. The results show that there is no significant effect of pennation angle in the range 0° to 20° to the single fibre action potential shape recorded on the skin surface. However, the changes with respect to pennation angle are observed in sEMG amplitude, frequency and fractal dimension. It is also observed that at different levels o
View details →DOI: 10.1371/journal.pone.0189036 Negative / Null Result ReportOpen accessAgriculture
Yasen H. Al tahan · 2005 · Mesopotamia Journal of Agriculture
In this study a specific gravity separator has been used in order to consider the effect of three levels of: longitudinal slop angles, vibration speeds, outlets for the produce and their effect on specific weight, productivity and seed purity. The results show the longitudinal horizontal slop angle (0) surpassed significantly in recording the greatest values for all characteristics of the study. While the second vibration speed surpassed significantly in specific weight and productivity and there were no significant effect in seed purity. in the product out lets, the first out lets achieved th
View details →DOI: 10.33899/magrj.2005.36122 Negative / Null Result ReportOpen accessMining engineering. Metallurgy
Yuming ZHANG, Xuefeng MEI · 2025 · Medžiagotyra
This work investigated the adhesion performance of recycled concrete with nano-SiO2 and nano-Al2O3 and steel bars in cold environments through freeze‒thaw cycle tests and tensile tests. The results show that the nanomaterials and number of freeze-thaw cycles have no significant effect on the damage morphology of the sample, but the adhesion strength and steel bar slip of the sample are considerably affected by the nanomaterials and number of freeze-thaw cycles. After the addition of the nanomaterials, the adhesion strength increased by 10.4 % (11.2 %), and the steel slip increased, by 17.3 % (
View details →DOI: 10.5755/j02.ms.38941 Negative / Null Result ReportOpen accessSpecial aspects of education
Brahma Wahyu Kurniawan, Beny Mahyudi Saputra · 2022 · Aksara
This study aims to find out about consumer satisfaction directly and indirectly in terms of the brand ambassador and e-word of mouth variables as well as purchasing decisions as a moderating variable. Using path analysis techniques and 125 people as respondents who have used online media (marketplace) to make transactions. The results obtained in this study are that there is no significant effect indirectly, but it has a significantly positive effect when viewed from the direct influence of each variable. Indicates that consumers who are respondents are not too concerned with many consideratio
View details →DOI: 10.37905/aksara.8.3.1967-1976.2022 Negative / Null Result ReportOpen accessBiology (General)
Qiaoli Wang, Wenpei Wang, Yonghui Wang et al. · 2024 · Journal of Fungi
Manganese is one of the trace elements necessary for organisms to maintain normal biological activities and is also a cofactor for manganese superoxide dismutase (Mn-SOD) and manganese peroxidase (MnP). In order to find a simple and effective method to rejuvenate the degenerated V. volvacea strains, we explored the effect of the exogenous addition of MnSO 4 on the antioxidant vigour and productivity of degenerated strains of V. volvacea . The results showed that the exogenous MnSO 4 had no significant effect on the non-degenerated strain T0, but it could effectively increase the mycelial growt
View details →DOI: 10.3390/jof10120825 Negative / Null Result ReportOpen accessScience
Karlos Edmundo Orozco Durán, José Segura Correa, Jessica Herrera Ojeda et al. · 2022 · Nova Scientia
The aim of the study was to evaluate the effect of body condition score (BCS) at lambing over the resumption of ovarian and estrous postpartum activity in lactating Pelibuey ewes. Twenty ewes were assigned to two groups, according to the BCS at lambing: Low BCS (LBC, n = 10) and High BCS (HBC, n = 10). Ovarian and estrous activities were daily monitored from day 3 postpartum until the first estrous or 90 days postpartum. Continuous variables were analyzed using Student´s t test and binary responses with the exact Fisher test. No significant effect of BCS at lambing on ewes in estrous, lambing
View details →DOI: 10.21640/ns.v14i28.2965 Negative / Null Result ReportOpen accessEnvironmental sciences
Chandini Palakkunnel Kuttappan, Sasankan Prasanth Narayanan, Syamkumar Reghu Nandanan Pillai et al. · 2025 · Natural Built Social Environment Health
This study assessed the toxic effects of pesticide exposure on four earthworm species: Perionyx excavatus Perrier, 1872; Megascolex konkanensis Fedarb, 1898; Dichogaster affinis (Michaelsen, 1890); and Metaphire houlleti (Perrier, 1872). The organisms were exposed to pesticide-treated soil. Biomass reduction, immunotoxicity, and enzyme biomarkers were used as endpoints. Among the tested species, M. konkanensis, a native species, appeared more sensitive than the others. In biomass tests, chlorpyrifos showed no significant effect on final body mass (p > 0.05). P. excavatus showed a significant r
View details →DOI: 10.63095/nbseh.25.850535 Negative / Null Result ReportOpen accessChemistry
Vincent J. Farage, Désimir Janjic · 1981 · CHIMIA
In certain cases, and particularly for the BrO3-/Ce4+/malonic acid system, oxygen seems to inhibit oscillations and the mechanical stirring in a N2 atmosphere has no significant effect on the oscillations. However, for the BrO3-/Ce4+/Cyclohexanon and BrO3-/Ce4+/Cyclopentanon systems under specific experimental conditions, stirring plays a determining part and oxygen has no notable effect on the oscillations.
View details →DOI: 10.2533/chimia.1981.289 Negative / Null Result ReportOpen accessAccounting. Bookkeeping
Hutapea Lastiar Hutapea, Aristanti Widyaningsih · 2017 · Jurnal ASET (Akuntansi Riset)
Abstract. The variables tested in the study consist of Good Government Governance measured by the rank of Indonesia Governance Index (IGI) and the size of the legislative by using the number of members of the provincial parliament, and also local government performance measured by three proxies, the GDP per capita, Poverty Rates, and independence Ratios. The study is conducted in 33 provinces in Indonesia in 2012. The results show that there is no significant effect of good government governance on local government performance by proxy of GDP per capita. There is significant impact of good gov
View details →DOI: 10.17509/jaset.v9i1.5446 Negative / Null Result ReportOpen accessEngineering (General). Civil engineering (General)
Tkachenko Egor M., Zaitsev Dmitry V. · 2016 · MATEC Web of Conferences
Intensively evaporating liquid films moving under the action of the cocurrent gas flow in a microchannel are promising for the use in modern cooling systems of semiconductor devices with high local heat release. This work has studied the dependence of the critical heat flux on the inclination angle of the channel. It has been found that the inclination angle in the plane parallel to the flow has no significant effect on the critical heat flux. Whereas the inclination angle in the plane perpendicular to the flow, on the contrary, significantly changes the value of the critical heat flux. Howeve
View details →DOI: 10.1051/matecconf/20167201114 Negative / Null Result ReportMedicine
Suzuki Y, Matsui M, Munir M et al. · 2025 · Zoological science
Using mitochondrial DNA and genome-wide SNP, phylogenetic relationships in Chalcorana were investigated. Phylogenetic analyses based on subregions of mtDNA found possible lineages of several cryptic species, but did not support the…
View details →DOI: 10.2108/zs240091 Negative / Null Result ReportOpen accessPhysics
Chuan-Ren Chen, Yu-Kuang Chu, Ho-Chin Tsai · 2015 · Physics Letters B
Even though the sensitivity of direct dark matter search experiments reaches the level of about 10−45 cm2, no confident signal of dark matter has been observed. We point out that, if dark matter is a vector boson, the null result in direct dark matter search experiments may be due to the destructive effects in dark-matter–nucleon elastic scattering. We illustrate the scenario using a modified Higgs portal model that includes exotic quarks. The significant cancellation can occur for a certain mass gap between new heavy quark and dark matter. As a result, the spin-independent dark-matter–nucleon
View details →DOI: 10.1016/j.physletb.2014.12.043 Negative / Null Result ReportOpen accessEducation
Yuli Christiana Yoedo, Anita Octaviani, Dani Puspitasari · 2025 · Journal of Digital Learning and Education
This study aims to determine the influence of MindMeister on 4C skills in the Indonesian language subject in grade 6 elementary school in Surabaya. A combined research method was used, involving data collection carried out through in-depth interviews with students, observation, taking pre-test and post-test scores 3 times each in the control class and experimental class. Quantitative results showed no significant effect of using MindMeister on 4C skills (significance values of 0,100 > 0,05). However, the qualitative result based on the student's perspective gained through interviews and observ
View details →DOI: 10.52562/jdle.v5i1.1376 Negative / Null Result ReportOpen accessScience (General)
Hasan Kılıç, Zübeyir Türk · 2016 · Trakya University Journal of Natural Sciences
The study in which different soil tillage methods (conventional, reduced and zero tillage) and control methods of narrow leaved weeds were compared was carried out in dry farming conditions in Diyarbakır during growing season of the years 2004-2005. The weeds density, yield and yield components of lentil (Lens culinaris Medik.) were investigated. A significant difference was found between the herbicide applied (HER-1) and herbicide free groups (HER-2) (p<0.05) in terms of biological yield, harvest index, number of pods and seed per plant but there was no significant difference between the two
Negative / Null Result ReportOpen accessBanking
Visita Yales Arma · 2014 · Journal of Business & Banking
Holding periods is the period of time during which one owns a security. In addition, holding period is influenced by transaction cost, market value, and risk. The objective of this research is to analyze the effect of bid-ask spread, market value, and variance return on holding period. The analysis of the data was done by multiple regression analysis. Using the data from 34 companies in LQ-45 index period 2010-2011, the results show that market value has positive effect and variance return has negative effect on holding periods. Theresults also show that Bid-Ask spread has no significant effec
View details →DOI: 10.14414/jbb.v3i2.237 Negative / Null Result ReportOpen accessBusiness
Budi Tay, Didi Sundiman · 2021 · DeReMa (Development Research of Management): Jurnal Manajemen
This study aims to determine green product innovation and green innovation processes on sustainable performance and whether there is an influence of managerial environmental concern that acts as a moderation. This study uses sampling method in the form of non-probability sampling. The sampling technique used in this study used purposive sampling. The analytical method used in this research is a quantitative analysis method. The results of this study indicate that green product innovation has no significant effect on sustainable performance, the green process innovation has a significant effect
View details →DOI: 10.19166/derema.v16i1.2505 Negative / Null Result ReportOpen accessAnimal culture
H Nasiri Mogadam, M Azadegan Mehr, L Zartash et al. · 2012 · پژوهشهای علوم دامی ایران
An experiment was conducted to examine the effect of different levels of extruded soybean and enzyme on broiler performance. In a completely randomized design with 2×3 factorial arrangement, 480 one day-old, Ross broiler chickens were divided into 40 groups, 12 chicks per pen. Treatments were consisting of combination of four levels of extruded soybean (0.0, 5.0, 10.0 and 15.0 %) and two levels of enzyme (0.0 and 500 g per ton). Different levels of extruded soybean and enzyme had no significant effect on blood factors such as cholesterol, triglyceride and the weight of liver and heart. The usa
Negative / Null Result ReportOpen accessFinance
Iwan Budiyono, Chansera Kista Sabilla · 2021 · Al-Arbah
Purpose - This study aims to analyze the influence of audit committees, sharia supervisory boards, and Islamic work ethic on the quality of islamic bank financial statements in Indonesia. Method - The method in this study used Multiple Linear Regression Analysis with SPSS software tools. Result - Based on the results of this research, simultaneously the audit committee, sharia supervisory board, and Islamic work ethic have a significant influence on the quality of islamic bank financial statements in Indonesia. Meanwhile, in part, the audit committee and islamic work ethic have no significant
View details →DOI: 10.21580/al-arbah.2021.3.1.8066 Negative / Null Result ReportOpen accessReproduction
Michiko NOGUCHI, Takehito SUZUKI, Reiichiro SATO et al. · 2020 · The Journal of Reproduction and Development
This study aimed to determine if lactation can be induced by exogenous hormonal treatment in non-pregnant sows. In experiment 1, pseudopregnant animals were divided into four groups and given: 1) 5 mg of estradiol dipropionate (EDP) 5 days before (n = 4), 2) 5 mg of EDP 10 days before (n = 3), 3) 10 mg of EDP 5 days before (n = 3) or 4) 10 mg of EDP 10 days (n = 3) before PGF2α treatment. Artificial lactation was induced in seven pseudopregnant sows (53.8%) by exogenous hormonal treatment. There was no significant effect of either an increased EDP dosage or interval from the EDP treatment to P
View details →DOI: 10.1262/jrd.2020-034 Negative / Null Result ReportOpen accessBusiness
Luksi Visita · 2019 · DIJB (Diponegoro International Journal of Business)
The purpose of this study is to observe the impact of inflation, profit-loss sharing loan, and capital adequacy towards performance of Islamic banks in Indonesia. This study utilizes longitudinal study from 2010 to 2018 towards Islamic Commercial Banks and Sharia Business Units that are listed in Indonesia. Using pool-time series data, the variables studied are inflation, capital adequacy ratio (CAR), profit-loss sharing loan, and return on assets (ROA). The result shows that only inflation has no significant effect on performance. Capital adequacy affects positively significant, while profit-
View details →DOI: 10.14710/dijb.2.2.2019.57-63 Negative / Null Result ReportOpen accessHistory of scholarship and learning. The humanities
Qing Yang, Abdullah Al Mamun, Siyu Long et al. · 2024 · Humanities & Social Sciences Communications
Abstract This study explores the factors influencing university students’ social entrepreneurial intentions based on the values-beliefs-norms theory. Data were collected from 769 Chinese university students through online surveys. The hypotheses were tested using partial least squares-structural equation modeling. The results confirmed the positive influence of altruistic and traditional values on normative beliefs. Awareness of the consequences and attribution of responsibility had no significant effect on personal norms among university students, which have been discussed in-depth in relatio
View details →DOI: 10.1057/s41599-024-03501-8 Negative / Null Result ReportOpen accessBiotechnology
HUANG Weijing, CAI Wenchao, CUI Mengjun, WANG Yurong, SHAN Chunhui, GUO Zhuang · 2024 · Zhongguo niangzao
In order to investigate the effect of ultra-high pressure on the quality of jujube wine, the jujube wine prepared by Saccharomyces cerevisiae HBUAS61676 was treated at a pressure of 50-600 MPa, and the changes of physicochemical indexes, color, taste, and volatile flavor of jujube wine after different pressure treatments were studied. The results showed that ultra-high pressure treatment had no significant effect on the pH of jujube wine (P>0.05), but significantly affected the soluble solid content and the alcohol content (P<0.05). It could significantly affect the color of jujube wine (P<0.0
View details →DOI: 10.11882/j.issn.0254-5071.2024.12.034 Negative / Null Result ReportOpen accessFinance
Riana Mayasari · 2022 · Jurnal Riset dan Aplikasi: Akuntansi dan Manajemen
This study aimed to determine the effect of internal control on the financial report’s quality. This research method was quantitative descriptive. Data were collected using documentation and literature study. This study used purposive sampling with total sample of 34 Local Governments on the Kalimantan Island. The data analysis technique used linear regression. The results of statistical tests showed that the internal control system had no significant effect on the quality of financial reports in regency/ city governments in Kalimantan. Abstrak Penelitian ini bertujuan mengetahui pengaruh peng
View details →DOI: 10.33795/jraam.v6i1.011 