bluuebunny/crossref_metadata_2025_split huggingface dataset:
Factors affecting Attitudes towards Adoption of Mobile Banking: Users and Non-Users Perspectives
Authors: Chakiso Cherinet Boke 
Published: August 2019

The advent and dispersal of technology is an interesting area of study since its success is dependent on the attitude for the adoption of it by customers. Extant literature indicates that mobile banking is the least adopted type of electronic banking when compared to other types of banking like Automated Teller Machine (ATM), despite its being the cheapest and quickest mode of communication. This study empirically examines and tests factors affecting users and non-users’ attitude towards the adoption of mobile banking. Data were collected from 256 participants both from users and non-users of mobile banking. Collected data were analyzed using chi-square, ANOVA, and correlation analysis. Findings indicate that trust, perceived ease of use, relative advantage, and compatibility have strong correlations with both users and non-users’ adoption towards mobile banking. However, perceived risk is found to have no significant relationship with users and non-users’ attitude towards the adoption of mobile banking. Moreover, it is found that there is a difference between users and non-users’ attitude towards the adoption of mobile banking. Furthermore, managerial implications, limitations of the study and future research directions were discussed.
Structure and Strategies of Multinational Enterprises in Nigeria
Authors: Oladimeji Moruff Sanjo , Eze Benneth Uchenna , Akanni Kazeem Adeyinka 
Published: August 2019

This study sought to examine the effect of organization structure on organization strategy. Survey research design was employed through the administration of structured questionnaire to staff of Nestle Nigeria PLC, Unilever Nigeria PLC and PZ (Cussons) PLC. The findings revealed that, organization structure positively and significantly affects strategy implementation (F stat 107.52* 0.000) and that organization structure account for 53% (Adjusted R2= 0.5312) variation in organization strategy. It can therefore be concluded that, organization structure plays a significant role in strategy formulation and implementation in Nigeria multinational enterprises. It could be seen that, global matrix structure and product division structure are the most critical elements of organization structure driving strategy implementation in a multinational firm. It is therefore recommended that, multinational firms in Nigeria should employ matrix structure towards the enhancement of their organization strategy. This is because matrix structure has the highest effect on organization strategy.
« Rira bien, tu riras le damné » : jeux de mots et enjeu des mots dans Za de Raharimanana
Authors: Sofo Giuseppe 
Published: August 2019

Cet article vise à proposer une analyse du rôle de la langue que Raharimanana a conçue pour Za, le protagoniste de son roman éponyme de 2007. Une attention toute particulière sera accordée aux jeux de mots et au rire, qui amènent l’auteur à produire, dans le personnage de Za, une figure de la déconstruction des mots et des mondes. Cette déconstruction de la langue est en effet loin d’être un simple jeu ou un exercice de style : elle constitue également une prise de position politique et poétique par rapport au pouvoir et à la gestion de la langue qu’orchestre ce dernier, à Madagascar et, plus généralement, dans le monde contemporain. Le rire de Za permet ainsi de dévoiler le vrai enjeu de la réappropriation d’un verbe amputé de sa valeur : la reconquête de la liberté.
The role of past experience in development of feeding behavior in common vampire bats
Authors: Berrío-Martínez Jineth , Kaiser Samuel , Nowak Michelle , Page Rachel A. , Carter Gerald G. 
Published: August 2019

The life history strategy of common vampire bats (Desmodus rotundus) suggests that learning might play a role in development of their foraging skills. We took advantage of 12 captive births in a study colony of vampire bats to test the role of past experience in two aspects of feeding. First, we compared preferences for blood temperature in 32 wild-born vampire bats versus 11 captive-born vampire bats that had only previously fed on blood of ambient temperature or colder. We found no evidence for a preference in either group for blood presented at 4 °C versus 37 °C. Second, we tested whether captive-born vampire bats with no previous experience of feeding on live animals could successfully feed on a live chicken. Five of 12 naïve captive-born bats were able to bite the chicken and draw blood, but only one bat gained more than 5% of body mass. We were unable to reasonably compare their feeding performance with that of wild-born bats because only two of three wild-born, short-term captive bats fed on the chicken and none of the seven wild-born, long-term captive mothers attempted to feed. This unexpected lack of feeding might be due to a previously reported age-dependent neophobia. When six of the captive-born bats were released in the wild, they appeared to feed successfully because they survived for more than three consecutive nights. We suggest further tests that would better clarify the role of learning in the development of foraging in vampire bats.
Antibiotic Susceptibility Profile and Prevalence Pattern of Gram Negative Pathogens in Tertiary Care Hospital
Authors: Joshi Pradnya , Khan Z. A. , Tandle Reema , Harshe Amol , Bhutada Amruta , Gogavale Sunita 
Published: August 2019

Background and Objective: Large amounts of antibiotics consumed by the human population have resulted in the culmination of pathogenic bacteria resistant to multiple drugs. The resistance profile of pathogens differ from one geographical location to another and keeps on changing continuously.
Methods: A retrospective observational analysis of antibiogram data was performed to characterize the susceptibility pattern of different pathogen isolates from various clinical sources. A total of 213 clinical isolates identified from the period June 2015 to June 2016 were included in the study.
Results: Of the 213 Gram-negative isolates, 36.6% were from urine, 23.9% from respiratory specimens, 11.74% from blood, 10.33% from pus whereas 17.37% were from other sources. E. coli (42.25%) was most predominant pathogen isolated followed by K. pnuemoniae. (25.35%) and Pseudomonas spp. (15.96%) while other Gram-negative pathogens contributed 16.4%. Antibiogram analysis has shown CSE-1034 as the most susceptible drug exhibiting 91.1%, 77.8%, 82.4% and 82.3% susceptibility against E. coli, K. pneumoniae, A. baumannii and P. aeruginosa. Among carbapenems, both meropenem and imipenem-Cilastin were most effective against E. coli. Meropenem was least effective against K. pneumoniae (50%) and imipenem against P. aeruginosa (32.35%). Like imipenem, Piperacillin-Tazobactam was highest effective against E. coli (20%) and lowest against P. aeruginosa (26.47%).
Conclusion: Susceptibility profile indicates CSE-1034 (a novel antibiotic resistance breaker) as the most effective drug among all the classes of antibiotics against the Gram-negative pathogens. A high resistance to piperacillin-tazobactam and penems, advocates use of CSE-1034 as empiric drug of choice in the treatment of bacterial infectious diseases where the pathogen isolates are suspected resistant towards β-lactam and β-lactamase inhibitor combinations.
Assessment of Blood Storage Effect Using CPDA-1 on Packed Cell Volume, Oxyhaemoglobin and Methaemoglobin in Different ABO/Rhesus Blood Types
Authors: Christian Serekara Gideon , Eze Evelyn Mgbeoma , Nkom Ndueghe Ebenezer 
Published: August 2019

Aims: The aim of this study is to determine the effect of blood storage using CPDA-1 on packed cell volume, methaemoglobin and oxyhaemoglobin in different ABO/Rhesus blood types donated by some residents of Port Harcourt, Rivers State, Nigeria.
Study Design: This is a comparative study aimed at evaluating the effect of storage on the levels of methaemoglobin, oxyhaemoglobin and packed cell volume using CPDA-1. A total of eight donors were recruited with each sample obtained from the eight (8) known blood groups A+,B+,O+,AB+, A-,B-,O-,AB- and analysis of samples were in triplicate. The donors were adult males with age ranging from 35-45 years and they were apparently healthy and free from transfusion transmissible infections. The different blood group samples were stored for 30 days and samples for analysis were collected at 5 days interval.
Place and Duration of Study: The study was conducted in Port Harcourt, Rivers State, Nigeria. All blood donors were residents of Port Harcourt. Blood donated was stored at Military Hospital Blood Bank, Port Harcourt, in a blood bag of 450 ml containing 63 ml of citrate phosphate dextrose adenine-1 (CPDA-1). The analysis was carried out at Rivers State University, Post Graduate Laboratory within March 1st to May 27th, 2019.
Methodology: A total of eight (8) different ABO/Rhesus blood types (A+,B+,AB+,O+,A-,B-,AB- and O-) were collected and stored using a blood bank refrigerator at temperature of 4°C. Day 0 was taken to be control and 5 days intervals in-between to day 30 acted as the test. Packed cell volume was estimated using micro-haematocrit method while oxyhaemoglobin and methaemoglobin levels were estimated spectrophotometrically as described by Evelyn and Malloy.
Results: The result showed a significant decrease in mean packed cell volume, oxyhaemoglobin and methaemoglobin levels compared to a higher mean of these parameters in the control; and these differences were statistically significant (p<0.05) across all blood groups under study. The decrease in values were as a result of haemolysis that occurs during storage.
Conclusion: Storage of blood irrespective of the blood group type using CPDA-1 for 30 days indicates that there are “storage lesions”. This is attributed to red cell haemolysis and ageing of red blood cells. In general, all blood types showed no significant difference in their haematological (packed cell volume, methaemoglobin, oxyhaemoglobin) characteristic deterioration or storage lesion based on blood type differences. It is therefore necessary to state that storage lesion characteristics are the same irrespective of the blood type, and that fresh blood be transfused, and if blood is stored, prolonged storage beyond 10 days should be avoided.
Porous Fibers Composed of Polymer Nanoball Decorated Graphene for Wearable and Highly Sensitive Strain Sensors
Authors: Huang Tao , He Peng , Wang Ranran , Yang Siwei , Sun Jing , Xie Xiaoming , Ding Guqiao 
Published: August 2019

AbstractWearable textile strain sensors that can perceive and respond to human stimuli are an essential part of wearable electronics. Yet, the detection of subtle strains on the human body suffers from the low sensitivity of many existing sensors. Generally, the inadequate sensitivity originates from the strong structural integrity of the sensors because tiny external strains cannot trigger enough variation in the conducting network. Inspired by the rolling friction where the interaction is weakened by decreasing interface area, porous fibers made of graphene decorated with nanoballs are prepared via a prolonged phase‐separation process. This novel structure confers the graphene fibers with high gauge factors (51 in 0–5% and 87 in 5–8%), which is almost 10 times larger than the same structures without nanoballs. A low detection limit (0.01% strain) and good durability (over 6000 circles) are obtained. By the virtue of these qualities, these fiber‐based textile sensors can recognize a pulse wave and eyeball movement in real‐time while keeping comfortable wearing sense. Moreover, by weaving such fibers, the electronic fabrics with a specially designed structure can distinguish the multilocation in real time, which shows great potential as wearable electronics.
Bifunctional Hydrogen Production and Storage on 0D–1D Heterojunction of Cd0.5Zn0.5S@Halloysites
Authors: Lin Sen , Zhang Yihe , You Yong , Zeng Chao , Xiao Xue , Ma Tianyi , Huang Hongwei 
Published: August 2019

AbstractDevelopment of efficient solar‐driven hydrogen (H2) evolution and H2 storage materials is challenging. Sulfide nanocatalysts show large potential for H2 production, but suffer from the drawbacks of inefficient charge separation, serious photocorrosion, and easy agglomeration. Herein, a 0D–1D satellite‐core ethylenediaminetetraacetic acid (EDTA)‐bridged Cd0.5Zn0.5S@halloysite nanotubes tertiary structure is designed via facile in situ assembly, which settles all the above‐mentioned issues and achieves exceptional and stable photocatalytic H2 evolution and storage. Significantly, EDTA grafted on halloysites as the hole (h+) traps steers the photogenerated h+ and electrons (e−) from Cd0.5Zn0.5S separately to halloysites and outer surface Pt sites, achieving efficient directional separation between h+ and e− and inhibiting the h+‐dominated photocorrosion occurring on Cd0.5Zn0.5S. Benefiting from these advantages, the hierarchy shows an unprecedented photocatalytic H2 evolution rate of 25.67 mmol g−1 h−1 with a recording apparent quantum efficiency of 32.29% at λ = 420 nm, which is seven‐fold that of Cd0.5Zn0.5S. Meanwhile, an H2 adsorption capacity of 0.042% is achieved with the room temperature of 25 °C and pressure of 2.65 MPa. This work provides a new perspective into designing hierarchical structure for H2 evolution, and proposes an integration concept for H2 evolution and storage.
2D Ruddlesden–Popper Perovskite Nanoplate Based Deep‐Blue Light‐Emitting Diodes for Light Communication
Authors: Deng Wei , Jin Xiangcheng , Lv You , Zhang Xiujuan , Zhang Xiaohong , Jie Jiansheng 
Published: August 2019

AbstractRuddlesden–Popper perovskite, (PEA)2PbBr4 (PEA = C8H9NH3), is a steady and inexpensive material with a broad bandgap and a narrow‐band emission. These features make it a potential candidate for deep‐blue light‐emitting diodes (LEDs). However, due to the weak exciton binding energy, LEDs based on the perovskite thin films usually possess a very low external quantum efficiency (EQE) of <0.03%. Here, for the first time, the construction of high‐performance deep‐blue LEDs based on 2D (PEA)2PbBr4 nanoplates (NPs) is demonstrated. The as‐fabricated (PEA)2PbBr4 NPs film shows a deep‐blue emission at 410 nm with excellent stability under ambient conditions. Impressively, LEDs based on the (PEA)2PbBr4 NPs film deliver a bright deep‐blue emission with a maximum luminance of 147.6 cd m−2 and a high EQE up to 0.31%, which represents the most efficient and brightest perovskite LEDs operating at deep‐blue wavelengths. Furthermore, the LEDs retain over 80% of their efficiencies for over 1350 min under ≈60% relative humidity. The steady and bright deep‐blue LEDs can be used as an excitation light source to realize white light emission, which shows the potential for light communication. The work provides scope for developing perovskite into efficient and deep‐blue LEDs for low‐cost light source and light communication.
Independent Memcapacitive Switching Triggered by Bromide Ion Migration for Quaternary Information Storage
Authors: Qian Wen‐Hu , Cheng Xue‐Feng , Zhao Yong‐Yan , Zhou Jin , He Jing‐Hui , Li Hua , Xu Qing‐Feng , Li Na‐Jun , Chen Dong‐Yun , Lu Jian‐Mei 
Published: August 2019

AbstractMemcapacitors are emerging as an attractive candidate for high‐density information storage due to their multilevel and adjustable capacitances and long‐term retention without a power supply. However, knowledge of their memcapacitive mechanism remains unclear and accounts for the limited implementation of memcapacitors for multilevel memory technologies. Here, repeatable and reproducible quaternary memories fabricated from hybrid perovskite (CH3NH3SnBr3) memcapacitors are reported. The device can be modulated to at least four capacitive states ranging from 0 to 169 pF with retention for 104 s. Impressively, an effective device yield approaching 100% for quaternary memory switching is achieved by a batch of devices; each state has a sufficiently narrow distribution that can be distinguished from the others and is superior to most multilevel memories that have a low device yield as well as an overlapping distribution of states. The memcapacitive switching stems from the modulated p–i–n junction capacitance triggered by Br− migration, as demonstrated by in situ element mapping, X‐ray photoelectron spectra, and frequency‐dependent capacitance measurements; this mechanism is different from the widely reported memristive switching involving filamentary conduction. The results provide a new way to produce high‐density information storage through memcapacitors.
Microwave Energy Drives “On–Off–On” Spin‐Switch Behavior in Nitrogen‐Doped Graphene
Authors: Zoppellaro Giorgio , Bakandritsos Aristides , Tuček Jiří , Błoński Piotr , Susi Toma , Lazar Petr , Bad'ura Zdeněk , Steklý Tomáš , Opletalová Ariana , Otyepka Michal , Zbořil Radek 
Published: August 2019

AbstractThe established application of graphene in organic/inorganic spin‐valve spintronic assemblies is as a spin‐transport channel for spin‐polarized electrons injected from ferromagnetic substrates. To generate and control spin injection without such substrates, the graphene backbone must be imprinted with spin‐polarized states and itinerant‐like spins. Computations suggest that such states should emerge in graphene derivatives incorporating pyridinic nitrogen. The synthesis and electronic properties of nitrogen‐doped graphene (N content: 9.8%), featuring both localized spin centers and spin‐containing sites with itinerant electron properties, are reported. This material exhibits spin‐switch behavior (on–off–on) controlled by microwave irradiation at X‐band frequency. This phenomenon may enable the creation of novel types of switches, filters, and spintronic devices using sp2‐only 2D systems.
Electrochemical Diagram of an Ultrathin Lithium Metal Anode in Pouch Cells
Authors: Shi Peng , Cheng Xin‐Bing , Li Tao , Zhang Rui , Liu He , Yan Chong , Zhang Xue‐Qiang , Huang Jia‐Qi , Zhang Qiang 
Published: August 2019

AbstractLithium (Li) metal is regarded as a “Holy Grail” electrode for next‐generation high‐energy‐density batteries. However, the electrochemical behavior of the Li anode under a practical working state is poorly understood, leading to a gap in the design strategy and the aim of efficient Li anodes. The electrochemical diagram to reveal failure mechanisms of ultrathin Li in pouch cells is demonstrated. The working mode of the Li metal anode ranging from 1.0 mA cm−2/1.0 mAh cm−2 (28.0 mA/28.0 mAh) to 10.0 mA cm−2/10.0 mAh cm−2 (280.0 mA/280.0 mAh) is investigated and divided into three categories: polarization, transition, and short‐circuit zones. Powdering and the induced polarization are the main reasons for the failure of the Li electrode at small current density and capacity, while short‐circuit occurs with the damage of the separator leading to safety concerns being dominant at large current and capacity. The electrochemical diagram is attributed from the distinctive plating/stripping behaviors of Li metal, accompanied by dendrites thickening and/or lengthening, and heterogeneous distribution of dendrites. A clear understanding in the electrochemical diagram of ultrathin Li is the primary step to rationally design an effective Li electrode and render a Li metal battery with high energy density, long lifespan, and enhanced safety.
Coordination‐Induced Interlinked Covalent‐ and Metal–Organic‐Framework Hybrids for Enhanced Lithium Storage
Authors: Sun Weiwei , Tang Xuxu , Yang Qinsi , Xu Yi , Wu Fan , Guo Siyu , Zhang Yanfeng , Wu Minghong , Wang Yong 
Published: August 2019

AbstractCovalent organic frameworks (COF) or metal–organic frameworks have attracted significant attention for various applications due to their intriguing tunable micro/mesopores and composition/functionality control. Herein, a coordination‐induced interlinked hybrid of imine‐based covalent organic frameworks and Mn‐based metal–organic frameworks (COF/Mn‐MOF) based on the MnN bond is reported. The effective molecular‐level coordination‐induced compositing of COF and MOF endows the hybrid with unique flower‐like microsphere morphology and superior lithium‐storage performances that originate from activated Mn centers and the aromatic benzene ring. In addition, hollow or core–shell MnS trapped in N and S codoped carbon (MnS@NS‐C‐g and MnS@NS‐C‐l) are also derived from the COF/Mn‐MOF hybrid and they exhibit good lithium‐storage properties. The design strategy of COF–MOF hybrid can shed light on the promising hybridization on porous organic framework composites with molecular‐level structural adjustment, nano/microsized morphology design, and property optimization.
X‐ray‐Controlled Bilayer Permeability of Bionic Nanocapsules Stabilized by Nucleobase Pairing Interactions for Pulsatile Drug Delivery
Authors: Deng Hongzhang , Lin Lisen , Wang Sheng , Yu Guocan , Zhou Zijian , Liu Yijing , Niu Gang , Song Jibin , Chen Xiaoyuan 
Published: August 2019

AbstractThe targeted and sustained drug release from stimuli‐responsive nanodelivery systems is limited by the irreversible and uncontrolled disruption of the currently used nanostructures. Bionic nanocapsules are designed by cross‐linking polythymine and photoisomerized polyazobenzene (PETAzo) with adenine‐modified ZnS (ZnS‐A) nanoparticles (NPs) via nucleobase pairing. The ZnS‐A NPs convert X‐rays into UV radiation that isomerizes the azobenzene groups, which allows controlled diffusion of the active payloads across the bilayer membranes. In addition, the nucleobase pairing interactions between PETAzo and ZnS‐A prevent drug leakage during their in vivo circulation, which not only enhances tumor accumulation but also maintains stability. These nanocapsules with tunable permeability show prolonged retention, remotely controlled drug release, enhanced targeted accumulation, and effective antitumor effects, indicating their potential as an anticancer drug delivery system.
Efficient Aggregation‐Induced Emission Manipulated by Polymer Host Materials
Authors: Wang Xing‐Huo , Song Nan , Hou Wei , Wang Chun‐Yu , Wang Yan , Tang Jun , Yang Ying‐Wei 
Published: August 2019

AbstractLinear copolymer hosts bearing a number of pillar[5]arene dangling side chains are synthesized for the facile construction of highly emissive supramolecular polymer networks (SPNs) upon noncovalently cross‐linking with a series of tetraphenyethylene (TPE)‐based tetratopic guests terminated with different functional groups through supramolecular host–guest interactions. An extremely high fluorescence quantum yield (98.22%) of the SPNs materials is obtained in tetrahydrofuran (THF) by fine‐tuning the parameters, and meanwhile supramolecular light‐harvesting systems based on spherical supramolecular nanoparticles are constructed by interweaving 9,10‐distyrylanthracene (DSA) and TPE‐based guest molecules of aggregation‐induced emission (AIE) with the copolymer hosts in the mixed solvent of THF/H2O. The present study not only illustrates the restriction of the intramolecular rotations (RIR)‐ruled emission enhancement mechanism regulated particularly by macrocyclic arene‐containing copolymer hosts, but also suggests a new self‐assembly approach to construct high‐performance light‐harvesting materials.