bluuebunny/crossref_metadata_2025_split huggingface dataset:
Inventory of arthropoda in endophytic hybrid corn plants (Variety Mr14 x Variety Nei9008)
Authors: Daud I D , Nurariaty A , Rasmi  
Published: May 2020

Abstract
Development of endophytic corn-seeds is a method of maintaining a high yield since the seed escapes from pest and disease infestation. Mr14 varieties and Nei9008 varieties have advantages such as resistant to downy mildew (Peronosclerospora maydis L), leaf rust disease (P. sorgi), leaf blight (Helminthosporium maydis), have high yield potential, drought tolerant, root and stem resistance and are recommended planting in the dry season in paddy fields or dry land. Arthropods are one of the pests that often attack corn plants. This study aims to determine the type of arthropods found in endophytic plants.The results showed that in endophytic hybrid corn area (Variety Mr14 x Variety Nei9008) found 28 types of arthropods. Arthropods that are most commonly found on land are black beetles (Coleoptera order) of 194 tails. From arthropods found in corn plantations, there are several Arthropods that act as pests, as predators, and as parasitoids. Diversity index is moderate.
Effectiveness of Beauveria bassiana Vuill. isolate on various culture media and its pathogenicity against Tribolium castaneum
Authors: Daud I D , Gassa A , Rizwaldy A 
Published: May 2020

Abstract
One of the selected microbes that has been widely used for production of bioinsecticides is B. bassiana. The fungus is very effective in suppressing larvae of pest insects Lepidoptera and Coleoptera. However, data on the potential of B. bassiana as bioinsecticides against Coleoptera are not widely available in Indonesia. This study aims to determine the effectiveness of B. bassiana against warehouse pests from Coleoptera Tribolium castaneum. Culture of B. bassiana on Potato Dextrose Agar media was propagated on corn media, corn liquid media, PDA media, and rice media. Tribolium castaneum test insects are derived from the remains of rice mills and then kept until imago lay eggs and have a uniform age. Then B. Bassiana was applied to Tribolium castaneum. Observations were made every 24 hours on the mortality of Tribolium castaneum. The results showed that rice media is the best media used for propagation of Beauveria bassiana when viewed from spore density where the average spore density is 12.53 X 106. The fungus isolates that were propagated using liquid corn media, rice media, and corn media were the best isolates that could be used to kill T. castaneum pest in warehouse.
Molecular identification of bacteria causing grain rot disease on rice
Authors: Aflaha I , J Chairul A , Baharuddin  , Kuswinanti T 
Published: May 2020

Abstract
Bacterial grain rot disease on rice plantation is a new disease in Indonesia. The disease become a big threat for formers in Indonesia because it causes high losses and no effective means of control has yet been found. This study was aimed to identify the causal agent of grain rot disease by PCR technique using specific B. glumae primers (1418S and 1418A) in 17 bacterial isolates obtained from several regions and rice varieties. Stages of the used method include extraction and amplification of DNA and continued with secuencing. The secencing result were processed using the BLAST program and compared with NCBI data for phylogenetic analysis. All isolates tested were morphological and physiological testing before. The amplification result showed that all 17 isolates tested produced DNA band in the size of ± 571 bp. These results indicated that all test isolates were classified as B.glumae. 4 of the isolates that had their DNA bases sequenced were then confirmed in the BLAST program from NCBI with results that showed that B.glumae isolates were found to have values homology 98-99% with Burkholderia glumae LMG 2196 = ATCC 33617 in Genebank.
The effect of agricultural technology-based counseling on rice farmers’ knowledge in Manjalling Village, Ujung Loe District, Bulukumba Regency
Authors: Nurdin Z , Hazairin  , Baja S , Arif S 
Published: May 2020

Abstract
The Effect of Agricultural Technology-Based Counseling on Rice Farmers’ Knowledge in Manjalling Village, Ujung Loe District, Bulukumba Regency. This study aimed to determine the effect of agricultural technology-based counseling on farmers’ knowledge in Manjalling Village, Ujungloe District, Bulukumba Regency. Determination of the sample using the method of simple random sampling (sampling with a simple random), the researchers chose randomly from the population who do not know how to use technology that was 174 farmers, and the research sample was 15% so the sample taken as many as 25 farmers. Data collection methods used observation, interviews, and documentation. Data analysis was conducted using qualitative analysis and simple linear regression. Based on the results of research conducted it can be concluded that the R square value indicated that technology-based counseling had an effect of 0.543, this states that technology-based counseling affected the knowledge of rice farmers by 54.3%. This proves that the effect of technology-based counseling on rice farmers’ knowledge in the medium category and the remaining 45.70% is explained by other factors or variables that are not known and are not included in this regression analysis.
Study of neutron moderation properties of liquid moderators in room and cryogenics temperature
Authors: Azmi Danial Zikri , Yahya Mohd-Syukri , Hamid Nasri A. , Idris Faridah Mohamad , Murshidi Julie Adrianny , Azman Azraf , Mohamed Abdul Aziz 
Published: May 2020

Abstract
Neutron moderation is crucial to sustain the chain reactions in a nuclear fission reactor. To understand further basic characteristics of neutron moderation, this research investigated fundamental moderating properties of liquid moderators typically used in modern power reactors, namely water and salt solution. Specifically, we employed a small angle neutron scattering (SANS) technique at beam-port number 4 of Malaysia’s PUSPATI TRIGA Reactor to study moderating characteristics of the liquid moderators at both room and cryogenic temperatures. To achieve cryogenic temperatures, a leakage-proof liquid sample holder was placed in a cryostat cooled by liquid nitrogen. Moderated and unmoderated neutron spectra were collected using Microspec-6 for analysis, which clearly shows that peak neutron counts dropped at cryogenic from room temperatures.
Radiation safety based on the sky shine effect in reactor
Authors: Nasir Nur Nadia , Kalillah Mahyuddin Siti Nor , Othman Siti Amira 
Published: May 2020

Abstract
In the reactor operation, neutrons and gamma rays are the most dominant radiation. As protection, lead and concrete shields are built around the reactor. However, the radiation can penetrate the water shielding inside the reactor pool. This incident leads to the occurrence of sky shine where a physical phenomenon of nuclear radiation sources was transmitted panoramic that extends to the environment. The effect of this phenomenon is caused by the fallout radiation into the surrounding area which causes the radiation dose to increase. High doses of exposure cause a person to have stochastic effects or deterministic effects. Therefore, this study was conducted to measure the radiation dose from sky shine effect that scattered around the reactor at different distances and different height above the reactor platform. In this paper, the analysis of the radiation dose of sky shine effect was measured using the experimental method.
Effects of the cap layer on the properties of AlN barrier HEMT grown on 6-inch Si(111) substrate
Authors: Xia Yuanyang , Zhu Youhua , Liu Chunhua , Wei Hongyuan , Zhang Tingting , Lee Yeeheng , Zhu Tinggang , wang Meiyu , Yi Li , Ge Mei 
Published: May 2020

Abstract
A series of AlN/GaN heterostructures were grown on 150 mm Si substrates by metal organic chemical vapor deposition (MOCVD). Different cap layer structures, including gallium nitride (GaN) and silicon nitride (SiNx), were used to passivate the heterostructure surface. A 3.5 nm thick SiNx cap is able to maintain the two dimensional electron gas (2DEG) stability in a long period. An AlN/GaN heterostructure with a 4.5 nm thick AlN barrier exhibits the best 2DEG properties, in terms of sheet resistance, carrier mobility and stability. The carrier mobility of the 2DEG can be enhanced by a combination of SiNx and GaN cap layers to over 1400 cm2/Vs.
Microstructure and mechanical properties of zinc matrix composites reinforced with copper coated multiwall carbon nanotubes
Authors: Ao Hongmei , Peng Shanshan , Zhang Zongkui , Liu Yuan , Dai Qianfei , Han Yan , Zhao Fei 
Published: May 2020

Abstract
Zinc alloy has been considered as a promising candidate for orthopedic implants due to its suitable degradation rate and good biocompatibility. However, its mechanical properties still have to be optimized. Metal matrix composites (MMC) are an effective way to improve the mechanical properties of zinc alloy. In this study, pure zinc as matrix, Cu-coated multiwall carbon nanotubes (MWCNTs) were used as reinforcement, and MWCNTs/Zn composites were successfully prepared by combining the use of electroless deposition (ED), spark plasma sintering (SPS), and hot-rolling techniques. The results show that MWCNTs are uniformly dispersed in the zinc matrix and a tight interface is formed between the MWCNTs and the zinc matrix. As the content of the MWCNTs increases, the mechanical properties of the MWCNTs/Zn composites gradually increase. The Cu-coated MWCNTs/Zn composites have higher mechanical properties than uncoated Cu. 3 vol% Cu-coated MWCNTs/Zn composite has a highest ultimate tensile strength of 281 MPa, but the elongation is only 4%. Load transfer effect and fine grain strengthening are two main strengthening mechanisms of MWCNTs/Zn composites. This research provides a new method for the design and preparation of MWCNTs/Zn composites.
Crystalline phase engineering in WO3/g-C3N4 composites for improved photocatalytic performance under visible light
Authors: Liang Junmei , Li Yuhui , Zhang Jing , Li Chun , Yang Xia , Chen Xuebing , Wang Fangfang , Chen Changdong 
Published: May 2020

Abstract
The photocatalytic performance of a semiconductor material is significantly related to its crystalline phase, thus, crystalline phase engineering is of importance for designing the semiconductor composites fabricated between two semiconductor materials. In this work, WO3/g-C3N4 composites was taken as an example, we designed and prepared the WO3/g-C3N4 composites with different crystalline phases of WO3. The important role of the crystalline phase of WO3, which is hexagonal phase (h-WO3), monoclinic phase (m-WO3), and mixed phases of h-WO3 and m-WO3 on the morphology, photoabsorption property, charge separation efficiency, and photocatalytic activity of the WO3/g-C3N4 composites were systematically investigated. By evaluating the photocatalytic degradation of RhB, it is found that the highest photocatalytic activity was achieved by WO3/g-C3N4 with 25 wt% h-WO3 and 75% g-C3N4 (H1G3). The enhanced photocatalytic performance of H1G3 was mainly attributed to the improvement in the separation efficiency of photogenerated electron-hole pairs, which was confirmed by surface photovoltage results. Our work sheds a light on the design of composite photocatalysts based on semiconductor oxides.
Comparative morphology of the humerus in forward-burrowing frogs
Authors: Keeffe Rachel , Blackburn David C 
Published: May 2020

AbstractBurrowing is one of the many locomotor modes of frogs (order Anura) and is found within many clades. Burrowing is generally categorized into two groups: forward-burrowing and backward-burrowing. While forward-burrowing is more rare than backward-burrowing, we show that it has evolved independently at least eight times across anurans and is correlated with distinct features of the external and internal anatomy. The shape of the humerus is especially important for forward-burrowing, as many species use their forelimbs for digging. Using X-ray computed tomography data, we characterize shape variation in the humerus, including three-dimensional (3D) morphometrics, assess the morphology of muscles related to this variation in the humerus, and discuss the mechanical and evolutionary consequences of our results. We show that the humeri of most forward-burrowing frogs are morphologically distinct from those of non-forward-burrowers, including features such as a curved and thick diaphysis, the presence of a pronounced ventral crest, and relatively large epicondyles and humeral head. Our findings also suggest that pectoral muscle anatomy differs substantially among burrowing modes in frogs. This work provides a framework for predicting locomotor modes in taxa for which the natural history is poorly known as well as extinct taxa.
The Social Production of Internet Space: Affordance, Programming, and Virtuality
Authors: Proctor Devin 
Published: May 2020

AbstractThe Internet has always been understood through spatial terminology—cyberspace, web addresses, sites, domains—but this article argues for moving beyond the metaphors to recognize the Internet as an embodied and socially-produced digital space. Building from a Lefebvrian framework of perceived, conceived, and lived spaces, the article proposes a new model for examining Internet social space, featuring three co-productive spaces: a space of affordance, a space of programming, and a space of virtuality. While our interaction with Internet social space is enabled through affordances, these actions are constrained by the limitations of the Internet's underlying programming. It is possible to subvert this power dynamic through tactical action when we realize that—unlike the spaces of affordance and programming—the space of virtuality is not tethered to any specific program or paradigm, but rather exists across platforms.
Pneumomediastinum in COVID-19 patients: a case series of a rare complication
Authors: Volpi Sara , Ali Jason M , Suleman Alishah , Ahmed Rahim Nadeem 
Published: May 2020

Abstract
Pneumomediastinum is a rare clinical finding, but one which can be the source of significant concern for clinicians. By presenting 3 such cases, we highlight that pneumomediastinum can complicate the course of a severe coronavirus disease 2019 infection but emphasize that conservative management is the first-line method of treatment, with gradual resorption of the air from the tissues. It is important to be alert to the development of pneumothorax, which will require drainage.
Randomized trials of invasive cardiovascular interventions that include a placebo control: a systematic review and meta-analysis
Authors: Lauder Lucas , da Costa Bruno R , Ewen Sebastian , Scholz Sean S , Wijns William , Lüscher Thomas F , Serruys Patrick W , Edelman Elazer R , Capodanno Davide , Böhm Michael , Jüni Peter , Mahfoud Felix 
Published: May 2020

Abstract

Aims
The difference in the benefit of invasive cardiovascular interventions compared with placebo controls has not been analysed systematically.

Methods and results
MEDLINE and Web of Science were searched through 29 March 2020. Randomized, placebo-controlled trials of invasive cardiovascular interventions (including catheter-based interventions and pacemaker-like devices) investigating predefined primary outcomes were included. Standardized mean differences (SMD) and odds ratios were calculated for continuous and dichotomous outcomes, respectively. Meta-regression analyses were performed to assess whether estimates of treatment effects were associated with methodological characteristics of trials. Thirty trials, including 4102 patients, were analysed. The overall risk of bias was judged to be low in only 43% of the trials. Ten trials (33%) demonstrated statistically significant superiority of invasive interventions over placebo controls for the respective predefined primary outcomes. In almost half of the 16 trials investigating continuous predefined primary outcomes, the SMD between the active and placebo procedure indicated a small (n = 4) to moderate (n = 3) treatment effect of active treatment over placebo. In contrast, one trial indicated a small treatment effect in favour of the placebo procedure. In the remaining trials, there was no relevant treatment effect of active treatment over placebo. In trials with a protocol-mandated stable and symmetrical use of co-interventions, the superiority of active procedures vs. invasive placebo procedures was significantly larger as compared with trials with frequent or unbalanced changes in co-interventions (P for interaction 0.027).

Conclusions
The additional treatment effect of invasive cardiovascular interventions compared with placebo controls was small in most trials.
Current state of scientific evidence on Internet-based interventions for the treatment of depression, anxiety, eating disorders and substance abuse: an overview of systematic reviews and meta-analyses
Authors: Taylor C Barr , Graham Andrea K , Flatt Rachael E , Waldherr Karin , Fitzsimmons-Craft Ellen E 
Published: May 2020

Abstract

Background
ICare represents a consortium of European Investigators examining the effects of online mental health care for a variety of common mental health disorders provided in a variety of settings. This article provides an overview of the evidence of effectiveness for Internet-based treatment for four common mental health disorders that are the focus of much of this work: depression, anxiety, substance abuse and eating disorders.

Methods
The overview focused primarily on systematic reviews and meta-analyses identified through PubMed (Ovid) and other databases and published in English. Given the large number of reviews specific to depression, anxiety, substance abuse and/or eating disorders, we did not focus on reviews that examined the effects of Internet-based interventions on mental health disorders in general. Each article was reviewed and summarized by one of the senior authors, and this review was then reviewed by the other senior authors. We did not address issues of prevention, cost-effectiveness, implementation or dissemination, as these are addressed in other reviews in this supplement.

Results
Across Internet-based intervention studies addressing depression, anxiety, substance abuse and eating disorders primarily among adults, almost all reviews and meta-analyses found that these interventions successfully reduce symptoms and are efficacious treatments. Generally, effect sizes for Internet-based interventions treating eating disorders and substance abuse are lower compared with interventions for depression and anxiety.

Conclusions
Given the effectiveness of Internet-based interventions to reduce symptoms of these common mental health disorders, efforts are needed to examine issues of how they can be best disseminated and implemented in a variety of health care and other settings.
Analysis of bacterial and archaeal communities associated with Fogo volcanic soils of different ages
Authors: Biderre-Petit Corinne , Hochart Corentin , Gardon Hélène , Dugat-Bony Eric , Terrat Sébastien , Jouan-Dufournel Isabelle , Paris Raphaël 
Published: May 2020

ABSTRACTBasaltic rocks play a significant role in CO2 sequestration from the atmosphere during their weathering. Moreover, the primary microorganisms that colonize them, by providing mineral elements and nutrients, are shown to promote growth of diverse heterotrophic communities and plants, therefore positively impacting Earth's long-term climate balance. However, the first steps of microbial colonization and subsequent rock weathering remain poorly understood, especially regarding microbial communities over a chronological sequence. Here, we analyzed the microbial communities inhabiting the soil developed in crevices on lava flows derived from different eruptions on Fogo Island. Investigated soils show typically low carbon and nitrogen content and are relatively similar to one another regarding their phylogenetic composition, and similar to what was recorded in large soil surveys with dominance of Actinobacteria and Proteobacteria. Moreover, our results suggest a stronger effect of the organic carbon than the lava flow age in shaping microbial communities as well as the possibility of exogenous sources of bacteria as important colonizers. Furthermore, archaea reach up to 8.4% of the total microbial community, dominated by the Soil Crenarchaeotic Group, including the ammonium-oxidizer Candidatus Nitrososphaera sp. Therefore, this group might be largely responsible for ammonia oxidation under the environmental conditions found on Fogo.
Roasted coffee wastes as a substrate for Escherichia coli to grow and produce hydrogen
Authors: Petrosyan Hripsime , Vanyan Liana , Mirzoyan Satenik , Trchounian Armen , Trchounian Karen 
Published: May 2020

ABSTRACT
After brewing roasted coffee, spent coffee grounds (SCGs) are generated being one of the daily wastes emerging in dominant countries with high rate and big quantity. Escherichia coli BW25113 wild-type strain, mutants with defects in hydrogen (H2)-producing/oxidizing four hydrogenases (Hyd) (ΔhyaB ΔhybC, ΔhycE, ΔhyfG) and septuple mutant (ΔhyaB ΔhybC ΔhycA ΔfdoG ΔldhA ΔfrdC ΔaceE) were investigated by measuring change of external pH, bacterial growth and H2 production during the utilization of SCG hydrolysate. In wild type, H2 was produced with rate of 1.28 mL H2 (g sugar)−1 h−1 yielding 30.7 mL H2 (g sugar)−1 or 2.75 L (kg SCG)−1 during 24 h. In septuple mutant, H2 production yield was 72 mL H2 (g sugar)−1 with rate of 3 mL H2 (g sugar)−1 h−1. H2 generation was absent in hycE single mutant showing the main role of Hyd-3 in H2 production. During utilization of SCG wild type, specific growth rate was 0.72 ± 0.01 h−1 with biomass yield of 0.3 g L−1. Genetic modifications and control of external parameters during growth could lead to prolonged and enhanced microbiological H2 production by organic wastes, which will aid more efficiently global sustainable energy needs resulting in diversification of mobile and fixed energy sources.
Log on and Prosper? Little Evidence for Codevelopment Between Psychological Adjustment and Technology Use in Older Adulthood
Authors: Schwaba Ted , Bleidorn Wiebke 
Published: May 2020

Abstract

Objectives
Researchers have hypothesized that using Information and Communications Technology (ICT), such as e-mail and social media, may buffer older adults from normative age-graded declines in psychological adjustment. However, past intervention research has been unable to conclusively evaluate this proposition, and no studies to date have examined this topic using naturalistic large-scale longitudinal methods.

Method
In this preregistered study, we examined the codevelopment between three aspects of psychological adjustment (loneliness, satisfaction with life [SWL], and depressiveness) and three factor-analytically derived clusters of ICT use (instrumental, social, and media) using a longitudinal representative sample of 2,922 Dutch adults aged 65 and older that contributed data annually from 2012 to 2017.

Results
Latent growth curve analyses indicated that ICT use was largely unrelated to psychological adjustment, both cross-sectionally and longitudinally. Of 36 associations tested, three were significant, and only one remained significant after including health and demographic covariates. Specifically, higher levels of media ICT use at baseline predicted steeper declines in SWL across the study period. Furthermore, results of random-intercept cross-lagged analyses indicated that change in ICT use did not predict future change in psychological adjustment, and vice versa.

Discussion
Results of this study help clarify the mixed results of past intervention research, indicating that effects of ICT use on psychological adjustment tend to be either null or much smaller than can be detected using typical intervention sample sizes. Overall, these results suggest that the association between technology use and psychological adjustment is negligible in older adults.