bluuebunny/crossref_metadata_2025_split huggingface dataset:
Kindergarten Registration Management System (KREMS)
Authors: Ibrahim Amirah , Mohamed Hasiah 
Published: March 2024

Â Kindergarten Registration Management System (KReMS) is a systemthat has been developed for one of the kindergarten in Dungun. Thissystem is proposed to be developed in order to help the management ofthe kindergarten to manage the registration process. The user for thissystem can be divided into four which are parent, admin, staff andteacher. KReMS basically have eight modules which are studentregistration, fees payment, generating report, announcement to parent,updating vacancies in the kindergarten, upload receipt and importantdocuments, update status, and record parent, staff and studentinformation. The methodology used to develop KReMS is RapidApplication Development (RAD). KReMS is evaluated by experts andusers. The evaluation of KReMS is done with four experts based on fivecriteria which are flow of the system, interface, efficiency, ease of use,and user experience. From this evaluation, the result shows that most ofthe experts agree that KReMS the interface of KReMS is attractive.Apart from that, userâ€™s evaluation that involved 30 respondents has beenconducted. Questionnaire is distributed to the respondents and therespondents evaluated the system based on six constructs which areinterface, usability, efficiency, satisfaction, ease of use and userexperience. Result shows that most of the respondents agreed that thesystem will be able to improve the efficiency of their works with thehighest mean which is 4.36 (SD= 0.62). As for the future enhancement,one of features that can be added is ability of the system to recordstudent attendance
The Research Assistant Management System (RAMS)
Authors: Amiruddin Nurul Izzati , Saâ€™dan Siti Aisyah , Mohamed Hasiah , Mohd Adzmi Nurul Husna Amalina 
Published: March 2024

Â The Research Management Unit (RMU) of UiTM Terengganu currentlyoperated manually in recording all of their Research Assistantinformation. The limitations in keeping the record manually are that therecord may be lost due to human or environment disaster and thestorage to keep all the record also may expended as the record are keepincreasing. The Research Assistant Management System (RAMS) isdeveloped to help the administrative of the RMU in UiTM Terengganuto manage the Research Assistant information more effectively. Reportscan be generate easily using this system. The Rapid ApplicationDevelopment (RAD) model methodology is used in the development ofthe system. The methodology consist of five phases which arerequirement planning phase, user design phase, construction phase,cutover phase and lastly the documentation. This system have beendemonstrated to three expert users for the feedback and therecommendation. Besides that, user testing also conducted bydistributed the questionnaire to the 30 respondents. The result based onthe respondent analysis shows that the highest mean of perceive ofusefulness of the system is 4.167 (SD= 0.531). In conclusions, theRAMS will give more benefit to user when using it and hopefully it canhelp RMU to manage their Research Assistant information.
Analysis of Reservoir Water Discharge at Solar Power Plant Tanjung Raja Village as a Basis for Pico Hydro Power Plant Planning in Paddy-Field Area
Authors: Dinata Yogi , Indriyani Indriyani , Dewi Tresna 
Published: March 2024

Energy is an important aspect of life as a whole. The fossil-based energy sources have dwindled over time, in line with population growth and economic growth. One approach to meeting the energy demand is to use renewable energy. According to Presidential Regulation Number 22 of 2017 on National Energy General Plan (RUEN) targets, the share of New and Renewable Energy in total national energy in 2025 will be 25%. The construction of a Hydro Power Plant is expected to reach 3.000 MW by 2025. According to NREEC statistical data from 2016, the potential for constructing a Hydro Power Plant in South Sumatera is approximately 448 MW. This paper investigates the possibility and potential of building Hydro Power Plant from the reservoir of the irrigation water system generated by a Solar Power Plant in Tanjung Raja Village, Muara Enim District, South Sumatra. The water discharge magnitude is measured, and the potential of electricity generated from the discharge is presented. The experimental data shows that water discharge from the reservoir can generate maximum electricity ofÂ 806,6488 watts with a discharge rate of 0.0653 m3/s, and power is 36,7245 watts, with a discharge of 0,0030 m3/s. The average electricity potential is approximately 375.6782 watts, with a discharge average of 0.0304 m3/s. Therefore, the experimental data shows the possibility of hybridizing the Solar Power Plant with Hydro Power Plant, which will be beneficial for the residential area in Tanjung Raja Village, Muara Enim.
Software Agent Simulation Design on the Efficiency of Food Delivery
Authors: Ismail Shahrinaz , Mostafa Salama A , Baharum Zirawani , Erianda Aldo , Jaber Mustafa Musa , Jubair Mohammed Ahmed , Adiya M. Hasmil 
Published: March 2024

Food delivery services have gained popularity since the emergence of online food delivery. Since the recent pandemic, the demand for service has increased tremendously. Due to several factors that affect how much time additional riders spend on the road; food delivery companies have no control over the location or timing of the delivery riders. There is a need to study and understand the food delivery riders' efficiency to estimate the service system's capacity. The study can ensure that the capacity is sufficient based on the number of orders, which usually depends on the number of potential customers within a territory and the time each rider takes to deliver the orders successfully. This study is an opportunity to focus on the efficiency of the riders since there is not much work at the operational level of the food delivery structure. This study takes up the opportunity to design a software agent simulation on the efficiency of riders' operations in food service due to the lack of simulation to predict this perspective, which could be extended to efficiency prediction. The results presented in this paper are based on the system design phase using the Tropos methodology. At movement in the simulation, the graph of the efficiency is calculated. Upon crossing the threshold, it is considered that the rider agents have achieved the efficiency rate required for decision-making. The simulation's primary operations depend on frontline remotely mobile workers like food delivery riders. It can benefit relevant organizations in decision-making during strategic capacity planning.
On the Coincidence Theorem
Authors: Bakić Radoš 
Published: March 2024

We are proving Coincidence theorem due to Walsh for the case when the total degree of a polynomial is less than the number of arguments. Also, the following result has been proven: if $$p(z)$$ is a complex polynomial of degree $$n$$, then closed disk D that contains at least $$n-1$$ of its zeros (counting multiplicity) contains at least $$\left[\frac{n-2k+1}{2} \right]$$ zeros of its $$k$$-th derivative, provided that the arithmetical mean of these zeros is also centre of D. We also prove a variation of the classical composition theorem due to Szegö.
Antioxidant and Prooxidant Effects of Curcumin, Piperine and Semi-synthetic Amides with Antimycobacterial Activity on the Lipid Oxidation Process
Authors: Slavchev Ivaylo , Dobrikov Georgi , Momchilova Svetlana , Ren Yanliang , Slavova-Kazakova Adriana 
Published: March 2024

Free radical oxidation is considered an important factor in the treatment of tuberculosis. Drugs or treatments with antioxidants are reflected in the literature but the choice of those used for tuberculosis is quite limited. Selected natural and synthetic compounds (hybrid molecules consisting of fenchane scaffold and cinnamoyl like residues attached through amide bond), possessing antimycobacterial activity were studied for their capacity to accelerate or decelerate lipid oxidation process. Three of the compounds under study showed prooxidant activity. To the best of our knowledge, this is the first report about the prooxidant activity of piperine under spontaneous autoxidation conditions. The presence of fenchane scaffold together with the 1,3-benzodioxole fragment, positively affects the activity but we can only speculate about the role of the amide part. Effect of equimolar binary mixtures with curcumin has also been studied. These new results may contribute to the search for efficient bio-antioxidant mixtures in the prevention and elimination of adverse reactions of antibacterial drugs.
Temporal Characteristics of the February 6, 2023 MW7.8, Turkey Earthquake Aftershock Sequence
Authors: Raykova Plamena , Solakov Dimcho , Simeonova Stela 
Published: March 2024

The devastating earthquake with moment magnitude MW7.8, (local magnitude ML=7.5) which occurred in the East Anatolian Fault Zone, westwards of Gaziantep, Turkey on February 6, 2023 was followed by an intensive aftershock activity. Studying time distribution of aftershocks is important for understanding physics of the earthquake generation process.
In the present study temporal pattern of aftershock sequence of the 2023 MW7.8 Turkey earthquake is analyzed. Because of the factors such as location and radiation pattern and the cumulative nature of building damage, aftershocks can cause more damage than the main shock. The temporal clustering of aftershocks is a dominant non-random element of the seismicity, so when the clusters are removed, the remaining activity can be modelled (as first approximation) as a Poisson process.
On the assumption that aftershocks are distributed in time as a non-stationary Poisson process, we use the maximum likelihood method for estimating the parameters (K, c and p) of the modified Omori formula. For testing the goodness of fit between the aftershock occurrence and different statistical models, a transformation from the time scale t to a frequency-linearized time scale τ is applied. Akaike's information criteria is used to select the best model for the temporal distribution of aftershocks.
It has been found that temporal distribution of the 2023 Turkey earthquake aftershocks is dominated by the classic power law decay in time and suggests the existence of secondary aftershock activity.
Growth of tetrakis thiourea potassium iodide as new second order optical material
Authors: Prakash J. Thomas Joseph , Vijayan N. , Kumararaman S. 
Published: January 2008

AbstractA novel organometallic nonlinear optical (NLO) crystal, namely thiourea complex of tetrakis thiourea potassium iodide (TTPI), has been grown by slow evaporation solution growth technique. The harvested crystal is large in size. To our knowledge there is no report is available for the bulk size single crystal of TTPI. This material has a positive temperature coefficient and has been grown by slow evaporation solution growth technique. The grown crystal have been characterized by employing several techniques such as single crystal and powder X‐ray diffraction, FTIR, UV‐Vis‐NIR spectra, thermo gravimetric analyses respectively. Etching studies have also been carried out in order to know the surface defects on the as grown specimen of TTPI. The relative second harmonic generation efficiency have been tested by using Nd:YAG laser as source. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Growth, optical and thermal studies of nonlinear optical L‐arginine perchlorate single crystals
Authors: Kalaiselvi D. , Kumar R. Mohan , Jayavel R. 
Published: January 2008

AbstractA potentially useful semiorganic nonlinear optical (NLO) material, L‐arginine perchlorate, has been synthesized and bulk crystals have been grown by slow cooling technique. The grown crystals were characterized by single crystal X‐ray diffraction, UV‐Vis‐NIR spectroscopy, FT‐IR, thermal analysis and SHG measurements. The grown crystals were thermally stable upto 153°C and exhibit SHG efficiency of about 0.17 with respect of Urea. The etching studies have been carried out on the grown crystal. LAPC has good optical transmission not only in the visible range, however, also in the near UV part of the spectra and hence it is a potential material for nonlinear frequency conversion. The refractive index was measured by the Brewster's angle method. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Reciprocal‐influence mediation model: A guide for practice and research
Authors: Sinclair Lucinda E. , Stuart William D. 
Published: January 2008

AbstractBecause of the length of most mediation sessions, it is challenging to assess a session's turn‐by‐turn nature. Here, a reciprocal‐influence model is presented that views mediation as a dynamic, interdependent system that recognizes individual utterances of disputants and media‐tors that change or reinforce destructive conflict. This perspective gives rise to a research method that maps the mediation discourse at a micro‐level in order to track each member's constructive and destructive state‐ments and view their mutual influence on the system as well as changes within the system over time. This process then facilitates a closer exam‐ination of critical shifts that lead to integrative conflict or resolution among the disputants. These closer examinations also indicate more‐and less‐effective client‐responsive interventions posed by the mediator.
Caged Amino Acids for Visible‐Light Photodelivery
Authors: Salierno Marcelo , Fameli Cecilia , Etchenique Roberto 
Published: January 2008

AbstractWe present a photocleavable protecting group based on ruthenium bipyridyl complexes and suitable for amino acid photodelivery. We discuss the photochemical properties of the caged glutamate, which is a major neurotransmitter in the CNS. The molar absorptivity for the caged glutamate at 450 nm is ϵ = 4200 M–1 cm–1 and its quantum yield of photorelease at 450 nm is ΦPD = 0.035, which is about 17 times higher than that of the most active organic caged compound at this wavelength. Similar figures are obtained for other α‐amino acids. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
Toxoplasma gondii ferredoxin‐NADP+ reductase: Role of ionic interactions in stabilization of native conformation and structural cooperativity
Authors: Singh Kulwant , Bhakuni Vinod 
Published: January 2008

AbstractThe apicoplast and the proteins present therein are parasite‐specific targets for chemotherapy of apicomplexan parasites. Ferredoxin‐NADP+ reductase (FNR) is an important enzyme present in the apicoplast of Toxoplasma gondii that operates as a general electron switch at the bifurcation step of many different electron transfer pathways. In spite of its importance as drug target not much structural information on the enzyme is available. Using fluorescence and CD spectroscopy in combination with enzyme activity measurement and size exclusion chromatography, we studied the pH‐dependent changes in structural and functional properties and interdomain interactions in recombinant Toxoplasma gondii ferredoxin‐NADP+ reductase (TgFNR) to understand the interactions responsible for stabilization of native conformation and modulation of functional activity of the enzyme. Under physiological conditions, the recombinant TgFNR is stabilized in an open conformation. The open conformation of the enzyme was found to be essential for its optimum functioning, as induction of compactness/rigidity by modulation of pH, leads to decrease in the functional activity. In native conformation, strong interactions exist between the NADP+‐ and FAD‐binding domains thus making the enzyme a structurally cooperative molecule. Under acidic conditions (pH about 4), the interdomain interactions present in native TgFNR were lost and the enzyme became structurally noncooperative. The pH‐induced structural alterations in the NADP+ binding domain, more precisely compaction of the conformation lead to its stabilization against thermal denaturation. The studies demonstrate the significance of electrostatic interactions both in stabilization of native conformation and maintenance of structural cooperativity in TgFNR. Proteins 2008. © 2008 Wiley‐Liss, Inc.
Identifying folding nucleus based on residue contact networks of proteins
Authors: Li Jie , Wang Jun , Wang Wei 
Published: January 2008

AbstractIn the native structure of a protein, all the residues are tightly parked together in a specific order following its folding and every residue contacts with some spatially neighbor residues. A residue contact network can be constructed by defining the residues as nodes and the native contacts as edges. During the folding of small single‐domain proteins, there is a set of contacts (or bonds), defined as the folding nucleus (FN), which is formed around the transition state, i.e., a rate‐limiting barrier located at about the middle between the unfolded states and the native state on the free energy landscape. Such a FN plays an essential role in the folding dynamics and the residues, which form the related contacts called as folding nucleus residues (FNRs). In this work, the FNRs in proteins are identified by using quantities which characterize the topology of residue contact networks of proteins. By comparing the specificities of residues with the network quantities KR, LR, and DR, up to 90% FNRs of six typical proteins found experimentally are identified. It is found that the FNRs behave the full‐closeness centrals rather than degree or closeness centers in the residue contact network, implying that they are important to the folding cooperativity of proteins. Our study shows that the FNRs can be identified solely from the native structures of proteins based on the analysis of residue contact network without any knowledge of the transition state ensemble. Proteins 2008. © 2008 Wiley‐Liss, Inc.
PREPARATION AND PROPERTIES OF PHOTOPRODUCTS OF OROTIC ACID ANALOGUES*
Authors: Sztumpf Eva , Shugar D. 
Published: January 2008

Abstract— Irradiation of orotic acid or 3‐methylorotic acid in liquid medium in the quartz U.V. leads to formation of photoproducts which have been shown to be dimers similar to those formed from uracil or thymine in frozen solution. The dimers are subject to photo‐dissociation in the same wavelength range, so that at any given wavelength there is a stationary equilibrium between dimer formation and dissociation. The equilibrium point is also dependent on concentration, and on pH, the dimerization reaction being more rapid for the neutral forms. For both compounds there is an appreciable oxygen effect, which inhibits dimer formation.I‐methylorotic acid and 1,3‐dimethylorotic acid also dimerize, but the oxygen effect is diminished as a result of alkylation on the N1 ring nitrogen.5‐methylorotic acid is radiation resistant in liquid medium, but readily dimerizes in frozen medium; the subsequent photodissociation of this dimer in liquid medium is unaffected by oxygen.Orotidine forms several photoproducts of which one, about 20 per cent of the total, is a similar dimer.Orotic acid methyl ester likewise dimerizes in liquid medium and exhibits an oxygen effect comparable to that for orotic acid. By contrast 5‐methylorotic acid methyl ester in liquid medium is radiation resistant at short wavelengths, but dimerizes at long wavelengths.The dimers of orotic acid, 3‐methylorotic acid, 5‐methylorotic acid and orotidine have been isolated in crystalline form. The properties of the various photodimers are described and quantum yields for dimerization and photodissociation calculated for several of them at 254 mμ. For orotic and 3‐methylorotic acids the high quantum yields for dimerization and the appreciable oxygen effect suggest that the dimerization of these molecules proceeds via a long‐lived excited state.
CONTRIBUTION A L‘ÉTUDE DU RÔLE DE LA LUMIÈRE DANS LA SEXUALISATION DU GAMÉTOPHYTE DE MARCHANTIA POLYMORPHA L.
Authors: Courtoy R. 
Published: January 2008

Abstract— Gemmae of Marchantia polymorpha L. were grown in artificial light (16 hr, 4000 lx), aseptic conditions, at the Phytotron of Liège. It was shown that:(1) Two distinct phases are obvious in growth and development of the gemmae:(a) A juvenile phase with a minimum length of 15 days in any kind of light quality, on a mineral nutrient medium.(b) An inductive phase, during which the inception of primordia occurs in incandescent light.(2) When 1% sucrose is added to the mineral nutrient medium, the length of the juvenile phase is reduced to 5 days; however, sucrose has no action when it is provided in the dark.It is assumed that the inductive incandescent light may promote a high energy reaction which is required for sexual induction.
L'ACTIVITÉ RESPIRATOIRE DE PERILLA NANKINENSIS (S.D.P.) EN FONCTION DES CONDITIONS LUMINEUSES (DURÉE, INTENSITÉ)
Authors: Deleuze Guy G. 
Published: January 2008

Abstract— Day length and light intensity influence the respiratory activity of Perila nankinensis (short‐day plant). Oxygen consumption in the leaves and in the apical bud is always greater in 8‐hr days than in 16‐hr days. It decreases during the course of development in short days (from germination to flowering) and in long days (vegetative growth). It increases after a transfer from non‐inductive day length to inductive (leading to flowering) and decreases after the inverse transfer.In both short days and long days, respiration rate in the leaves and the apical bud depend on light intensity. In short days, the reduction of light intensity decreases the respiratory activity. In long days, the respiration rate increases only temporarily.
LASERS IN CHEMISTRY*
Authors: Rentzepis P. M. 
Published: January 2008

Abstract— Lasers have not been applied as widely in chemistry as in physics. However the larger number of laser lines available now, which have higher power, and short pulse duration enhances their application in chemistry and related fields.This paper discusses some of the advantages of lasers over the normal or classical light sources. This description of the applications of lasers in chemistry is not claimed to be complete nor intended to include all of the reported work of laser application in chemistry, but to describe a few applications of lasers in several fields of chemistry.
PHOTOPRODUCTS IN DNA IRRADIATED IN VIVO*
Authors: SETLOW R. B. 
Published: January 2008

Abstract— Ultraviolet irradiation of DNA in vitro and in vivo results in the formation of many different types of photoproducts. The general procedure for correlating such photoproducts with photo‐biological effects is outlined and is applied for cyclobutane pyrimidine dimers and for spore photoproducts.RESUMENLa irradiación de DNA in vitro e in vivo conduce a la formación de distintos tipos de fotoproductos. Es delineado el procedimlento general para relacionar esos fotoproductos con efectos biológicos y es aplicado a dimeros de ciclobutano, pirimidina y para fotoproductos de esporas.
THE EFFECTS OF GAMMA RADIATION ON AQUEOUS SOLUTIONS OF 2′‐3′ URIDYLIC ACID
Authors: CASTRO ENRIQUE , JIMÉNEZ ROSA 
Published: January 2008

Abstract— The free radicals induced by gamma radiation in deaerated aqueous solutions of 2′‐3′ uridylic acid at 77°K have been studied by electron spin resonance techniques. The annealing at 193°K of the OH radical trapped at 77°K produces a secondary radical at the uridylic acid base. Saturated base products were detected chromatographically. A mechanism is proposed for the formation of these degradation products.RESUMENHan sido estudiados los radicales libres inducidos por irradiación gamma en soluciones acuosas y deaireadas de 2′‐3′ácido uridílico a 77°K, usando ESR. El recocido a 193°K del radical OH atrapado a 77°K produce un radical secundario en la base del ácido uridílico. Los productos saturados fueron detectados por cromatografia. Se propone además un mecanismo para la formación de los productos de degradación.