bluuebunny/crossref_metadata_2025 huggingface dataset:
FLORAL TRAITS AND POLLINATION OF SPANISH CHERRY (Mimusops elengi Linn.) IN UNIVERSITI MALAYSIA TERENGGANU CAMPUS
Authors: SUKRI HAIKAL HAZMI , GUNONG FELICIA SYUPIE , IDIN NAZURAH IDINNAZURAH , MOHAMED NOR ZALIPAH
Published: August 2022

Some plants are self-compatible thus do not require pollinating agents for fertilisation of the ovule. Pollinating agents however are essential to promote cross-fertilisation, thus beneficial for the long-term survival of the plant species. In this study, we investigate the flower characteristics (flower size, colour, breeding system and nectar reward) and flower visitors of the Spanish cherry, Mimusops elengi, one of the most commonly planted ornamental trees in Universiti Malaysia Terengganu campus. Observations of flowers and the flower visitors were conducted between October 2016 and February 2017. The small sized flower, 19.88 + 1.70 mm (mean + SD) in height and 11.38 + 0.87 mm (mean + SD) in width; low volume with 11.90 + 5.55 μl (mean + SD) but with high sugar concentration with 26.57 + 3.72 % (mean + SD) nectar reward indicated insect pollination syndrome in this species. Xenogamy breeding system was determined for this species from the pollen-to-ovule ratio observation, which showed pollinating agents are required for cross-pollination to occur. Notes on the flower visitors revealed that two hymenopteran bee species, Xylocopa confusa and Heterotrigona itama as the pollinating agents of M. elengi. Not only these two species showed high visitation to the flowers, but they also land on the flowers to feed on the flower nectar, which could then potentially transfer the conspecific pollen grains on their bodies to the stigma for fertilisation of the flowers they visited.
EFFECTS OF PROBIOTICS (Bacillus sp.) ON GROWTH PERFORMANCE OF JUVENILE ORANGE SPOTTED GROUPER (Epinephelus coioides)
Authors: MOHD AZMI MOHD YUSRHAFIZMAN , MOHAMED MOHAMAD HAFIZZUDDIN , EMILIA SHARIFAH NOOR
Published: August 2022

The present study conducted was to investigate the effect of probiotics (Bacillus sp.) on the growth performance of juvenile orange spotted grouper (Epinephelus coioides). Probiotic (Bacillus sp.) of different concentration; 106 (T1) and 107 (T2) CFU/ml was sprayed on the feed, while a control (C) group was fed no probiotics. A total of 60 juvenile orange spotted grouper were used in this experiment. Each treatment had 3 replicates and each replicate contained 10 juveniles. The experiment was conducted for 31 days. The feed was given by calculation 3% of body weight of the grouper each week and the fish were fed 3 times a day. As for the result, neither T1 nor T2 treatments showed any significant improvement in the growth performance of the grouper when compared the control group. In T1, there is a significant difference in Feed Conversion Ratio (FCR) only when compared with the control group. In this study, control showed better growth performance result may be caused by the insufficient concentration of probiotics in diets of juvenile Epinephelus coioides. Lastly, no mortality rate was recorded in this study. Overall, the inclusion of 106 and 107 CFU/ml of probiotic (Bacillus sp.) did not give desirable results towards growth performance of juvenile Epinephelus coioides and should be retested with a higher dosage.
BENTHIC COMMUNITY DIVERSITY AT MARINE ARCHAEOLOGICAL SITE, PULAU BIDONG, SOUTH CHINA SEA
Authors: MOHD ISMAILLUDDIN SITI AMINAH , MOHD ABDULLAH MAIZAH , IBRAHIM YUSOF SHUAIB , IDRIS IZWANDY
Published: August 2022

An artificial structure on the seafloor will affect the structure of the benthic community. This structure may include a sunken ship or a century-old building that becomes an underwater heritage site. Benthic communities at underwater archaeological sites have been studied around the world, though it is lacking in Malaysia. This study aimed to determine the benthic community composition and diversity in sediment and on an artifact (small ceramic pot) at the marine “Bidong shipwreck” archaeological site. SCUBA divers collected samples (sediment and artifact) from an 18 m depth archaeological site in October 2017. Then, all samples were fixed with 10% buffered formalin and preserved in 80% ethanol prior to identification analysis. Most benthic organisms were identified until class taxon, except for class Polychaeta until family. A total of 2711 benthic organisms which belonged to eight phyla, and 17 classes were recorded, of which 638 are polychaetes. In the archaeological site, Syllidae was the most abundant family in the sediment, and the family Nereididae dominated in artifact while Capitellidae was dominant at the control site. Shannon-Weiner diversity index showed variation and ranged from 1.5 to 2.1, while the evenness index value ranged from 0.56 to 0.77. The benthic community in sediment on both sites were more diverse and even compared to the artifact. Simultaneously, Jaccard’s similarity test discovered that the benthic community’s composition in sediment at the control site was highly similar to the archaeological site (0.80) comparatively to the artifact (0.65). It is suggested that the benthic community at the archaeological site has reached an equilibrium state similar to the control site. The scouring process may influence the lower benthic community composition on the artifact than sediments in its surroundings. These findings provide an overview of benthic community’s post-disturbance resilience and reveal a marine archaeological site’s ecological status.
SEAKEEPING PERFORMANCE OF A HYDROFOIL IN WAVES USING CFD APPROACH
Authors: ZIKRY SYAFIQ , FITRIADHY
Published: August 2022

Hydrofoil usually experiences high resistance and excessive vertical motions (heave and pitch) that may affect the passenger’s comfort due to the harsh environmental condition. Therefore, it is necessary to investigate seakeeping performance of a hydrofoil ship in waves due to the presence of a complex hydrodynamic phenomenon. To achieve this objective, an analysis of Computational Fluid Dynamic (CFD) approach on a hydrofoil ship motion is proposed. Several parameters such as Froude Number and foil angle of attack have been taken into account. The results revealed that the subsequent increase of Froude Number was inversely proportional to the heave and pitch motions. Inherently, these have led to an upgrade of hydrofoil seakeeping performances presented in the form of high Response Amplitude Operators (RAO). Furthermore, the increasing angle of the foil bow was proportional to the heave motion while for the foil stern, 7.5o showed lower heave motion, then followed by 5o and 10o respectively. For the pitch motion, the increase of foil bow was lower at 5o then followed by 10o and 7.5o. The increase of the foil stern was proportional to the pitch motion experiences by a hydrofoil. In general, this CFD simulation is very beneficial to ensure operational effectiveness of hydrofoil design in high sea states with respect to the aforementioned design parameter.
EXCHANGE RATE FORECASTING USING FUZZY TIME SERIES-MARKOV CHAIN
Authors: HUI LIM XIN , YUSOFF BINYAMIN
Published: August 2022

Exchange rate forecasting plays an important role in financial management. However, it is a complex process with high nonlinearity and data irregularity. Moreover, the forecasting of exchange rate is highly involved with imprecise and uncertain data. Analysis of forecasting models which corresponds to the exchange rate has always experienced fluctuations. Therefore, exchange rate forecasting becomes a challenging task in finance. Several studies have shown that stand-alone forecasting models such as time series, fuzzy time series, and Markov chain have their own drawbacks and are not successful enough in forecasting accurately. In this study, we propose a hybrid model of fuzzy time series-Markov chain to forecast the future exchange rate. Fuzzy time series-Markov chain is a combination of the classic fuzzy time series model with Markov chain model used to analyse a set of time series data. The main motivation for this study is to improve the accuracy in exchange rate forecasting. The selected currencies are Malaysian Ringgit (MYR) and Singapore Dollar (SGD). The proposed model was then evaluated by the Mean Absolute Percentage Error (MAPE) performance metric to test the robustness of the model. Lastly, a comparison between the proposed model and fuzzy time series model was conducted with respect to the MAPE. The results showed that the MAPE value for fuzzy time series-Markov chain was 0.9895% which fell under the criterion of highly accurate forecasting. Meanwhile, the MAPE value for fuzzy time series was 3.4306%. Thus, the forecasting performance of the proposed model was better than the fuzzy time series model. This study reveals the potential benefits of the proposed model as a highly accurate forecasting model.
FACTORS THAT INFLUENCE SOCIAL MEDIA USAGE IN TRAVEL INFORMATION INTERNET SEARCHES
Authors: MOHD ISA NOR FAZZIATUL AZNI , W AB RAHMAN N ALIA FAHADA , MOHAMED MONIZAIHASRA
Published: August 2022

Advances in technological development, especially with regards to mobile technology and applications, sees more and more tourists being prone to using social media to gather valuable travel and destination information particularly in the travel planning phase. This is in line with the theory of reasoned action, information reliability and enjoyment, which are some of the benefits that are positively associated with the intention to use social media. Most people, especially teenagers, are twice as likely to have profiles on social media and use it as a source to gather information on travel and destinations they would like to visit. Thus, this study examines the factors that influence the use of social media in travel information searches by students. The main objective of this study is to examine students’ intentions to use social media in travel information searches. Specifically, this study attempts to determine how perceived benefits (information reliability, enjoyment) influence travel information searches on social media. Data for the study was gathered at public universities in Malaysia using convenience sampling and questionnaires.
EDUCATION MOBILE APPLICATION CHEMISTRY FORM 4
Authors: MOHD SHAMSUL ANIS ADILLAH , BASIR MOHAMMAD AIZAT , M. OSMAN UWAISULQARNI
Published: August 2022

Nowadays, people around the world are learning chemistry through various means and every student has a mobile phone to help them to connect to the Internet which is a treasure trove of educational material. An app available for mobile phones known as Chemistry Form 4 focuses on developing a student’s knowledge of chemistry using smartphones as a platform has been developed for students in Malaysia. This mobile app was developed using Android Studio and Unity 2019.1 programs. The agile method was used to develop this project because of its flexibility with regards to its working process. Starting from planning of the problem statement, to the provision of solutions and objectives of this project, and the analysis of the requirements from client phase. To analyze this project, a few diagrams such as use case diagram, use-case description, activity diagram, sequence diagram, and class diagram were used. Thereafter, the designing phase kicked in that included the normalization of data, the development of entity relationship diagram, data dictionary and CRUD statement for the project. This project also focused on the students’ needs from a chemistry app, which included preparation, presentation, practice and performance. Those functions include preparing and reading notes that can be updated by teachers. Students can also answer questions provided by teachers and view their results at the end of the sessions. Last but not least the students can view the atomic structures and chemical nature using an augmented reality (AR) model after the scanning cards provided by developers. Students can use the app to enhance their creativeness in getting to know atomic structures in this manner. Providing updated notes and questions with the aid of instructors will allow the students to benefit from the advanced know-how and chemistry expertise of the instructors. The mobile apps help students to improve their basic understanding of chemical processes and recognise the value of learning chemistry.
SYNTHESIS AND CHARACTERIZATION OF METAL ORGANIC FRAMEWORKS (MOFs) DERIVED FROM 3,5-PYRIDINEDICARBOXYLIC ACID
Authors: AHMED AL-NOBI KHAWLAH KHALED , ABDUL KADIR MAISARA
Published: August 2022

Reaction between 3,5-pyridinedicarboxylic acid with four different metal salts which are cadmium nitrate tetrahydrate, cobalt acetate, zinc acetate hydrate and nickel chloride produced four novel metal organic frameworks (MOFs), with general formula given by elemental analysis as {(CdLNO3.2H2O)CH3OH}n, {(CoL.2H2O)}n, {(ZnL.2H2O)}n and {(NiL.Cl2))}n (where L=C7H5NO4), respectively. These MOFs were synthesized using solvothermal techniques and fully characterized by using combination of Fourier Transform Infrared (FTIR) and Carbon, Hydrogen, Nitrogen Analyzer (CHN Analyzer). In the FTIR spectra of the MOFs, metal oxide bond peaks were identified at 1393 cm-1, 586 cm-1, 424 cm-1 and 471 cm-1 for Cd-O, Co-O, Zn-O and Ni-O, respectively. Characterization using Ultraviolet-Visible spectroscopy (UV-Vis) was unsuccessful due to limited solubility of MOFs in many solvents.
INVESTIGATION OF ANTIOXIDANT ACTIVITY AND CHEMICAL FINGERPRINT OF MARINE POLYCHAETE BASED ON ATR-FTIR METABOLOMICS
Authors: ZAMZAM NUR IZZATI , KAMARUDIN NAZEEFA IZZATI , IDRIS IZWANDY , HARUN NOOR ANIZA , WAN ISMAIL WAN IRYANI , RUDIYANTO  , ABAS FARIDAH , MAULIDIANI
Published: August 2022

Marine polychaete is an important component in marine benthic communities and can be widely found in Malaysia. To date, the information regarding its chemicals and biological activities of marine polychaete is still limited. This study aims to evaluate the chemical fingerprint of the marine polychaetes Marphysa moribidii and Diopatra claparedii using Attenuated Total Reflectance Fourier-Transform Infrared (ATR FTIR) metabolomics. The antioxidant activity including total phenolic content (TPC) and DPPH free radical scavenging activity was also evaluated. The results showed that D. claparedii has a higher amount of TPC (0.47±.0.03 mg GAE/g) compared to M. moribidii (0.30± 0.01 mg GAE/g). The DPPH activity tested at the concentration 5000 μg/ml showed percentage of inhibition expressed by D. claparedii and M. moribidii extracts were 38.80±11.70 and 25.54±7.35 respectively. The principal component analysis (PCA) score plot showed distinct clusters between M. moribidii and D. claparedii. Further investigation via PCA loading plot showed that the FTIR signals at 3340, 1090, 1047 and 880 cm-1 were contributed by D. claparedii. Meanwhile, the partial least square (PLS) analysis revealed several signals were correlated with the TPC including stretching vibration of C-H at 2854 cm−1, C=C bonds at 1640 cm-1 and C=C bending at 1726 cm-1 showing the presence of aromatic ring deformations. This study provides the key important chemical fingerprint of different marine polychaetes (D. claparedii and M. moribidii sp.) that might be useful for the discovery of bioactive compounds from natural resources.
STUDY ON MORPHOLOGICAL CHARACTERISTIC OF STINGLESS BEE (Heterotrigona itama) IN TERENGGANU
Authors: SAIFULLIZAN SITI NURAISHAH , AZMI WAHIZATUL AFZAN , WAN OMAR WAN BAYANI
Published: August 2022

Stingless bee, Heterotrigona itama is one of the most important and effective insect pollinators of many plant species. They can be found in the tropical rain forest where they build their nest in the living trees. This study was conducted to measure the morphological characteristic of H. itama from two different populations which were TKPM (Taman Kekal Pengeluaran Makanan) Kampung Peradong, Manir (A) and Big Bee Honey, Merchang (B), Terengganu. 20 individuals of H. itama adults were taken from each population by using insect net. The external morphologies such as body length, head, abdomen, thorax, leg, tibia, forewing, hindwing and antenna were measured by using DinoLite 2.0. The measurements were recorded and the mean ± standard deviation and range of the measurement data were analysed. Based on Mann-Whitney test, there were significant differences for population B of H. itama in mean of head length (p=0.0016; p<0.05), head width (p=0.0022; p<0.05) and thorax width (p=0.0445; p<0.05). However, there was no difference in body colour for H. itama of both populations. H. itama of population B has a larger segmented body with the range of head length at 1.179 mm to 2.152 mm, head width 1.743 mm to 2.557 mm, and thorax width 1.809 mm to 2.329 mm. For future research, it is suggested that this study can look into the genetic status of this species.
THE EFFECTS OF LIGHT-EMITTING DIODES (LED) IRRADIATION TREATMENT ON THE POSTHARVEST PRESERVATION AND MICROBIOLOGICAL QUALITY OF STRAWBERRY (Fragaria ananassa) CV. FESTIVAL
Authors: WAN MOHD NOOR WAN NUR HIDAYAH , WAN SEMBOK WAN ZALIHA , WAN ABDULLAH WAN ZAWIAH
Published: August 2022

Strawberry (Fragaria Ananassa sp.) is non-climacteric, aggregate fruit with a rich source of anthocyanin and vitamin C. However, strawberry has short storage life and is very susceptible to decay and physiological deterioration process. Therefore, emitting the post-harvest LED light to strawberries during cold storage has been studied. This work aimed to evaluate different LED light treatment effects to retain post-harvest quality and microbial quality of the strawberry. The post-harvest parameters that have been used are weight loss, colour, firmness, total soluble solids, titratable acidity, and pH. The microbial parameter such as Escherichia coli count, Salmonella count, total plate count, and mold count would also has been assessed. Strawberries were irradiated under three different LED light types (white, blue and red). Blue and red LED lights have different wavelengths, which are 470 nm and 630 nm. The strawberry fruits were stored at 5ºC in a cold room and study parameter were assessed in 10 days. There were statistically significant differences (p<0.05) between the treatment of weight loss, firmness, pH, and total soluble solid. The best treatment for this experiment is blue LED light which showed the lowest weight loss, retained the colour and delayed firmness loss of the strawberry. This study also proved that blue LED light could reduce the growth of E.coli. In conclusion, LED light produces minimal heat, which improves food safety and preserves post-harvest quality of strawberry.
A REVIEW: THE EFFECTIVENESS OF EDIBLE COATING INCORPORATED WITH RED MACROALGAE (Kappaphycus alvarezii) EXTRACT ON THE POST HARVEST QUALITY OF FRUITS
Authors: ACHONG@ASMAT NUR SYAMIMI HAZIQAH , AHMAD FAUZIAH TUFAIL
Published: August 2022

Fruits and vegetables are the main fresh produce that receive high demand among consumers because of the nutritional properties to boost the human health. However, not all fruits and vegetables are durable due to the ongoing release of ethylene even when harvested. Damaged produce will not be accepted by the customer and will cause post-harvest losses. It was estimated that about 30% of fruits and vegetables are damaged or affected by microorganisms, insects, pre- and post-harvest conditions during transportation and improper storage conditions. Edible coating is an effective approach for fruit preservation. It provides good barrier properties towards carbon dioxide, oxygen, and moisture vapor and at the same time beneficial for the environment and human health. The aim of this review is to investigate the potential of red macroalgae (Kappaphycus alvarezii) as an edible fruit coating. This edible red macroalgae abundant in Sabah is widespread around the world due to their carrageenan properties. Carrageenan is normally used as the main edible coating material due to its thickening stability and natural antioxidant. The carrageenan film from these algae is able to replace synthetic packaging and is more environmentally friendly. The abundant source of this algae in Sabah will ensure sustainability and cost effectiveness besides increasing the socio-economy of the local community. Red macroalgae has potential to be used as a bio preservative in fresh produce as it shows better quality characteristics in physicochemical properties of fruits such as weight loss, colour and firmness.
INCORPORATION EFFECT OF MANGO (Mangifera indica) KERNEL FLOUR ON THE PHYSICOCHEMICAL, ANTIOXIDANT AND SENSORIAL PROPERTIES OF PASTA
Authors: YEE YONG PUI , MOHAMAD NIZAHA JUHAIDA
Published: August 2022

The incorporation of mango kernel flour (MKF) into pasta was carried out to maximise the utilisation of waste from mango industries. Mango kernels are reported to make up between 45% and 75% of a mango seed and its high antioxidant properties make it an ideal ingredient in pastas. This study aims to determine the physiochemical, antioxidant properties, and sensory acceptability of fresh pasta made with MKF. There were four formulations of pasta where MKF was incorporated at 0%, 2.5%, 5.0% and 7.5% (w/w). The pasta was analysed for its proximate composition, cooking quality, antioxidant properties, physical analysis, and sensory acceptance. The incorporation of MKF did not generally affect the proximate composition of pasta, however the fat content was increased at 7.5% MKF. The high MKF content had also affected the cooking properties, colour and texture of the pasta. As expected, the substitution of MKF increased the antioxidant properties of pasta at the 2.5% concentration level without affecting the cooking properties, colour and texture of the pasta. The MKF substitution only started to affect the acceptability in terms of colour and texture at 5% substitution level while other attributes including the overall acceptability was not significantly affected (p > 0.05). In conclusion, since the antioxidant properties of pasta was increased at the lowest level of MKF infusion while other properties were not significantly affected, pasta with 2.5% MKF could potentially increase the dietary value of pasta in terms of antioxidants while promoting the agricultural waste reduction.
UV PHOTOCATALYSIS AND METAL DOPED TITANIUM DIOXIDE: ELIMINATION OF E. COLI AND S. AUREUS IN WATER
Authors: MOHAMED NUR AQILAH NABILAH , WAN MANSOR WAN SALIDA
Published: August 2022

Photocatalysis has been widely used for water disinfection and wastewater treatment. UV photocatalysis induced bacteria photocatalytic disinfection, focusing on mechanisms in bacteria inactivation. The problem with industrial wastewater is that it generally contains a high concentration of toxic or non-biodegradable pollutants. The application of photocatalysis is mainly focused on the removal of microorganisms. Metal-doped TiO2-based photocatalyst has a significant potential for the inactivation of harmful pathogens. In this research, the effect of different metal-doped on photocatalytic disinfection against Escherichia coli (E. coli) (gram-negative) and Staphylococcus aureus (S. aureus) (gram-positive) under UV light was investigated. TiO2 was used and doped with various types of metal such as copper (Cu), cobalt (Co), and iron (Fe). The experiments were run under UV light with 1 g/L of selected metal-doped for up to 3 hours. A series of photocatalytic disinfection on E. coli and S. aureus were conducted on water contamination with 500 mL of trypticase soy broth (TSB) and 5 ml of bacteria. These results show that the UV photocatalyst with Cu doped-TiO2 gives 99% of E. coli disinfection. While for S. aureus disinfection Co-doped-TiO2 gives 96% of removal bacteria after 3 hours of treatment. In conclusion, a metal-doped TiO2–based UV photocatalytic system is highly recommended for improving the water decontamination process.
A Method for Computing the Merrifield–Simmons Index on Benzenoid Systems
Authors:   Benem´erita Universidad Aut´onoma de Puebla, Mexico, De Ita Guillermo , Bello Pedro , Contreras Meliza
Published: August 2022

We present a method for computing the Merrifield-Simmons index on some basic graphs. For example, our proposal works on paths, simple cycles, trees, and we show that the method can be extended to process benzenoid systems Hr,t with a total of r.t hexagons. In the case of benzenoid systems, our method consists of performing a linear-time Hamiltonian walking on an isomorphic hexagonal grid from , at the same time that the number of independent sets are being computed incrementally. Our method improves the asymptotic behavior of the time-complexity with respect to the transfer matrix method, which is the classic method for computing the Merrifield-Simmons index on grid graphs, even for benzenoid systems.
UNIVERSAL EXPERIMENTAL FACILITY OF IHEPNP NSC KIPT FOR RESEARCH OF HIGH-ENERGY ELECTRON BEAM INTERACTION WITH THIN AMORPHOUS AND SINGLE-CRYSTAL STRUCTURES
Authors: Kovalenko G.D. , Kasilov V.Y. , Kazarinov Yu.H. , Karpus S.H. , Semisalov I.L. , Kochetov S.S. , Shopen O.O. , Shliakhov I.M.
Published: August 2022

The description and bench test results of the developed universal experimental facility [1] are presented. It mounted at the direct beam line of IHEPNP NSC KIPT 30 MeV Linac for the fundamental and applied research of high energy electron interaction with amorphous and single-crystal structures. The universal facility consists of the following structural elements and systems: electron beam transportation system; electron beam parameters formation and measurement, secondary electron emission monitor (SEM); electron beam full absorption Faraday cups (FC), collimators, goniometrical device system and magnetic energy analyzer.
FACILITY AND RESEARCHES RESULTS OF THE FRICTIONAL CHARACTERISTICS OF METAL – IRRADIATED-CERAMICS PAIR
Authors: Butenko V.I. , Dubniuk S.N. , Dyachenko A.F. , Manuilenko O.V. , Pavlii K.V. , Zajtsev B.V.
Published: August 2022

The technique and facility for studying of frictional characteristics of metal – ceramics pair are presented. Parameters of samples irradiation on the helium ions linear accelerator with 0.12 and 4 MeV energies are resulted. Samples from TiO2 and Al2O3 at 0.12 MeV beam energy are irradiated. Damageability and occurrence profiles of target atoms along of helium ions range as sputtering ratios are calculated for the irradiated materials. Dependences of the sputtered atoms quantity on samples depth are resulted. Using this data, calculations on change of samples "superficial" density along of ions range are made. Experimental results of a sliding friction factor measurement depending on cycle’s quantity, temperature and irradiation dose are presented. On the basis of microscopic researches conclusions on influence of an irradiation on frictional characteristics of a metal – ceramics pair are drawn.
VECTOR PROTON BEAM WRITING SYSTEM
Authors: Polozhii H.E. , Ponomarev A.G. , Kolinko S.V. , Rebrov V.A.
Published: August 2022

Vector method for scanning with focused beam of megaelectronvolt-energy in proton-beam writing is described. Vector proton-beam writing method was proven experimentally to have numerous advantages over raster method. Focused beam size and shape are measured by scanning standard copper mesh for e-beam microscopy. Prospectives
of hardware and software upgrade are regarded. Vector proton-beam writing technology can be used in many applications, including X-ray optics, electronics prototyping, microrobotics, microfluidics, photonics and microstructure fabrication in new materials.
The component of pathogenesis of sudden nocturnal death in patients with heart failure
Authors: Makarov LM
Published: August 2022

Patients with chronic heart failure (CHF) constitute the bulk of the group at the highest risk of sudden death (SD). The majority of SDs occur at night. However, CHF grade and ejection fraction do not always determine the risk of SD in the outcome of the disease. The following view has been expressed based on the research on the topic and the described mechanisms underlying SD: impaired QT interval adaptation (“hyperadaptation”: QT/RR slope > 0.24) to HR in patients with CHF who show maximum QT interval prolongation during the night, capable of triggering life-threatening ventricular tachyarrhythmias that trigger the mechanism of SD associated with CHF, can play some role. It is possible that identification of QT interval hyperadaptation in patients with CHF makes it possible to form the group at high risk of SD associated with HF and can become an additional indication for implantation of cardioverter-defibrillator.
Transcriptional activity of DNA-methyltransferase genes in the chronically exposed residents of the Ural region
Authors: Nikiforov VS , Blinova EA , Akleyev AV
Published: August 2022

In addition to damaging the genetic apparatus of the cell, ionizing radiation can cause epigenetic alterations. DNA methylation that plays a vital part in regulation of cellular processes is a common epigenetic modification. DNA methylation ensured by DNA methyltransferases occurs in the CpG-rich sequences. The study was aimed to assess mRNA expression of genes encoding DNA methyltransferases (DNMT1, DNMT3A, DNMT3B) in the chronically exposed individuals who live along the River Techa over a long-term period. A total of 112 people were examined more than 65 years after the beginning of chronic exposure. The average accumulated dose to red bone marrow (RBM) was 782.0 ± 82.3 mGy, and the average accumulated dose to thymus and peripheral lymphoid organs was 93.2 ± 13.6 mGy. The subjects' age at the time of examination was 67.9 ± 0.8 years (54–83 years). The relative mRNA levels for the studied genes were assessed by realtime polymerase chain reaction (real-time PCR). mRNA expression of DNMT1 correlated positively with the dose to RBM (p = 0.04), thymus and peripheral lymphoid organs (p = 0.02), as well as with the dose rate in these organs (p = 0.05, p = 0.04, respectively) during the period of the highest levels of radiation exposure. In individuals exposed in the high dose range (over 1000 mGy) there was a significant increase in the expression of DNMT1 mRNA compared to the comparison group (p = 0.02). The findings may indicate the DNMT1 gene involvement in epigenetic alterations that occur in the chronically exposed people in the long term.
El desarrollo social en el proceso de formación profesional desde la Química Orgánica
Authors: Puerta Díaz Lázara , Alvarez Vega Betsy , De Villa Amil Sellés Yissel Pérez
Published: August 2022

Las transformaciones en el contexto universitario forman parte del proceso educativo para desarrollar al máximo las potencialidades de los individuos. En correspondencia con el modelo del profesional este trabajo le confiere importancia a la formación integral y la cultura científica necesaria para el desarrollo social. Se exponen los resultados de la aplicación de la estrategia curricular del Programa Director de Promoción y educación para la salud y la sexualidad en el PEA de la Química Orgánica II. Se presentan actividades docentes relacionadas con los aminoácidos y su relevancia en el cambio oportuno de actitudes y la prevención de enfermedades como aspecto de interés político de nuestra sociedad. Se asumen los intereses colectivos e individuales de los estudiantes. Este tema sirve de modelo para el resto de los contenidos del programa. Se aplicó en el grupo de 4to año de la carrera Licenciatura en educación especialidad Química en el curso 2019-2020 en la Universidad de Cienfuegos Carlos Rafael Rodríguez.
Conciencia colectiva y su incidencia en la propagación de Covid 19 en Cuenca durante el año 2020
Authors: Beltran Flores Melissa
Published: August 2022

En el presente artículo se podrá evidenciar datos con respecto a la conciencia colectiva  de la ciudadanía azuaya con respecto al Covid 19 en el año 2020, se exhibirán las medidas más utilizadas a lo largo del año y confirmar de esta manera si los resultados del mismo han sido favorables para combatir la pandemia, mientras tanto las Unidades de Cuidados Intensivos de los hospitales públicos siguen trabajando casi en su límite en una lucha constante por combatir la pandemia.
Felicidad y engagement laboral en APROFE a nivel nacional en tiempos de Covid-19
Authors: López Maryorie Silva
Published: August 2022

El objetivo del presente estudio es medir la felicidad y el engagement laboral de los colaboradores de APROFE, Institución que cuenta con sedes en las tres principales ciudades del Ecuador. El estudio incluyó preguntas relacionadas con el Covid-19 para determinar incidencias significativas. Para ello, se realizó un estudio descriptivo correlacional de corte transversal, con la participación de 242 colaboradores administrativos y de salud, entre marzo 2020 y julio 2021.
La felicidad se analizó con el instrumento Escala de Felicidad de Lima, midiendo 4 factores: Sentido positivo de la vida, Satisfacción con la vida, Realización personal, y Alegría de Vivir. Para el engagement laboral se utilizó la Escala Utrech de Engagement que mide 3 componentes: Vigor, Dedicación y Absorción.
Los datos obtenidos muestran que existe una correlación bilateral positiva (Nivel 0.01 bilateral), lo cual indica que hay una relación significativa entre el Factor I con los componentes Vigor y Dedicación, y entre los Factores II, III y IV con los componentes Vigor, Dedicación y Absorción.
Además, los fallecimientos por Covid-19 no tuvieron incidencia a largo plazo sobre las variables, ya que los resultados muestran el más alto nivel de felicidad y un estado alto de engagement en los colaboradores de APROFE.
El Desarrollo Económico de la ciudad de Guayaquil: visión desde la formación del capital humano.
Authors: Torres Miranda José , Rada Mary Álava
Published: August 2022

La presente investigación analiza la incidencia directa de la educación formal en el desarrollo económico de la ciudad de Guayaquil, considerando que el capital humano es un componente importante para la expansión de las economías a largo plazo, siendo el objetivo principal de investigación determinar la relación existente de la formación del ser humano en torno al desarrollo de la economía local. Para el fin mencionado se ha hecho uso de algunas variables relacionadas a los niveles de escolaridad y acceso a los recursos, por lo tanto, se presenta un estudio teórico – descriptivo, cuyo método es deductivo – analítico para lo cual se consideran estadísticas de los años 2015 al 2019. Como resultado se evidencia un ligero incremento en la formación del capital humano siendo la respuesta a distintas políticas públicas obteniendo una incidencia positiva en el desarrollo socioeconómico, durante los años de estudio el promedio de escolaridad creció de 11,29% a 11,34% y en lo que a tasa de pobreza respecta esta decreció del 33% al 32% de acuerdo a los datos obtenidos del Instituto Nacional de Estadísticas y Censos del Ecuador. Se concluye que existe una alta tasa de inexistencia de empleos de calidad, y que a pesar de la presencia de una tasa alta de educación aun es necesario que el sector privado, el desarrollo científico y tecnológico y el Estado, se involucren para crear mayor desarrollo socioeconómico a través del talento.
Perfil sociodemográfico del turista versus la percepción residente con relación al agroturismo del cantón Milagro
Authors: Torres Gorki Aguirre , Bohórquez Wendy Ríos
Published: August 2022

La investigación pretendió establecer una propuesta de solución a la problemática que impide la dinamización de la economía local vinculada a fincas agroturísticas rurales del cantón Milagro en relación a la oferta turística local, en un primer término se focalizó con una visión descriptiva y correlacional la relación entre el comportamiento del turista y la percepción de la población residente del cantón, determinándose el perfil sociodemográfico de los turistas, además se analizó la percepción de la población residente del cantón; de esta manera se logró vincular a las fincas agroturísticas de la zona rural a la oferta turística local. Se utilizó la metodología no experimental, el tipo de enfoque es mixto, con método deductivo, con investigación de campo en la que se emplearon herramientas de recolección de datos como encuestas dirigidas a los visitantes y entrevistas dirigidas a gestores de la actividad turística del cantón, apreciando fortalezas y debilidades que estos poseen, determinando el perfil socio demográfico del turista, visualizando gustos y preferencias agroturísticas locales. La correlación de variables, tomó en cuenta la Varianza y la Anova dando un resultado de relación positiva en la descripción de la relación o influencia del agroturismo como opción de desarrollo.
Law Enforcement against Violations of the State Civil Apparatus Code of Conduct in Implementing Public Services in Realizing Good Governance in Indonesia
Authors:   Faculty of Law, Lampung University, Indonesia, Triono Agus
Published: August 2022

The purpose of the study is to understand and analyze the professionalism of public services by State Civil Apparatus and law enforcement for violations of the code of ethics by State Civil Apparatus in carrying out public services, namely in order to provide understanding to the State Civil Apparatus and government agencies regarding the concept and application of the code of ethics of the State Civil Apparatus in realizing good governance. in Indonesia. The code of ethics for the State Civil Apparatus is a guideline for attitudes, behavior, and actions in carrying out their duties. The State Civil Apparatus is the entirety of human resources in charge of running the wheels of government, namely carrying out public services. The problem is the widespread violation of the code of ethics of the State Civil Apparatus. This requires law enforcement for violations in carrying out public services. The problems that will be discussed in this study are the professionalism of public services by state civil servants and law enforcement for violations of the code of ethics by state civil servants in carrying out public services. The method used in this research is normative research, using a statute approach.
Determination of Technological Factors of the Use of Complex Binding Materials in Increasing the Strength Limits of Road Surfaces
Authors:   Reseacher of JizPi Reportment of “Vehicle Engineering” Jizzakh polytechnic institute Republic of Uzbekistan, Omonov Maxmud
Published: August 2022

One of the ways to improve the complex properties of interpolymer materials (IM) is their modification by adding various additives to their composition. This, in turn, improves the material’s strength, hardness, heat resistance, water resistance, and a number of other important properties. One of the ways to improve the complex properties of interpolymer materials (IMs) is physical modification by adding various fillers to their composition. This results in improved IM strength, hardness, heat resistance, water resistance, and a number of other important properties. Modification methods are used to improve the properties of polymer-polymer complexes and to expand the directions of their use. In order to improve the complex properties of composite materials (CMs) made from PPKs, they have different composition.
Propósitos para una convivencia sana de las familias: un aporte a la salud sexual y reproductiva de los adolescentes. Rionegro 2018
Authors: Ortiz Zapata Ana Cecilia , Castañeda Bedoya Verónica María , López López Caroll Liseth , Osorio Ramírez Angie Carolina
Published: August 2022

El presente artículo de reflexión surge del proyecto de intervención realizado para identificar los propósitos de los padres de familia, después de adelantar el seminario-taller desarrollado a partir de los contenidos de las cartillas sobre afecto, autoridad y comunicación con los hijos, en tres instituciones del municipio de Rionegro (Antioquia). Las cartillas son resultado de la investigación Percepción de la salud sexual y reproductiva de las familias del municipio de Rionegro  2013 (Correa G M. Q., 2014). Durante el seminario –taller, se brinda información clara sobre el tema de estudio a los acudientes, para la orientación adecuada en asuntos de sexualidad a sus hijos. Mediante el componente evaluativo, se evidencian los propósitos de los padres de familia y su afinidad por conocer el tema de salud sexual y reproductiva y se logra crear en ellos intenciones de escucha, comunicación, autoridad y afecto para contribuir a la salud sexual y reproductiva de sus hijos.
Sistemas de Interacción Educativa: una interpretación gráfica a la luz de la Teoría de Sistemas Sociales de Niklas Luhmann
Authors: Franco Montoya Juan Carlos , Mosquera Orozco Jaime de Jesús
Published: August 2022

El siguiente artículo busca interpretar las dinámicas complejas presentes en los procesos de interacción que se llevan a cabo, en el acompañamiento directo en las aulas de clase o en el desarrollo de dirección y asesoría de trabajos de grado. En este sentido, los docentes deben proponer escenarios de interacción a partir de los cuales los mismos estudiantes se acerquen a la investigación. Ahora bien, con el fin de comprender mejor estas dinámicas, se ha establecido como base conceptual, teórica y epistemológica la Teoría de los Sistemas Sociales de Niklas Luhmann, que como se propone en este escrito, ofrece una arquitectura que la configura como una herramienta ponente para la compresión de los procesos de interacción. Para el desarrollo de este escrito se aborda la lectura de algunos de los textos más representativos del autor, donde expone su teoría de forma directa a partir de un conjunto de fichas bibliográficas (matriz de análisis documental), las cuales permitieron desde la reflexión crítica la construcción de una secuencia gráfica en la cual se expone una interpretación aproximada a los sistemas de interacción, ajustándolos al campo educativo. La hipótesis que se plantea en el contexto del presente trabajo se refiere a la posibilidad de establecer una metodología, que partiendo de los planteamientos que hace Luhmann de los sistemas sociales, permita hacer evidentes y concretas la interacción docente – alumno, con miras a  aterializar propuestas rigurosas de investigación, en el ámbito de la educación superior.
Universidad y territorio. Las misiones: una estrategia de Extensión Universitaria con sentido territorial
Authors: Jiménez Rodas Ana María , Pérez Ramírez Fabián Alonso
Published: August 2022

En este artículo se pretende, en primera instancia, dar cuenta cómo, de acuerdo con las comprensiones que sobre la universidad y el territorio se tienen, se deriva una determinada forma de entender y hacer Extensión Universitaria. Así, las condiciones sociales, políticas, económicas, ideológicas y culturales, establecen lo que ha sido, es y será la Extensión. En un segundo momento se abordan los orígenes de la Extensión Universitaria, los diversos enfoques que se han dado a lo largo del siglo XX para posteriormente presentar la comprensión que desde la Universidad Católica de Oriente se tiene de la Extensión y de una de sus estrategias: las Misiones. Este artículo de revisión, es resultado de las investigaciones en curso Sistematización de la Estrategia de Extensión Universitaria, Misiones: Pertinencia e Impacto Social de la Universidad Católica de Oriente y la investigación doctoral: La Universidad, configuración de un campo de problematización teórico-práctico; se pretende dar cuenta de las tensiones que se han dado históricamente en la Extensión Universitaria y las relaciones que se tejen entre la Universidad y el Territorio. Finalmente se plantea que la Extensión en las universidades, es una de las formas privilegiadas de interacción con el territorio; permite la divulgación del conocimiento generado en la investigación poniéndolo al servicio de la solución de problemas sociales. No obstante, la Extensión misma es posibilitadora no solo de transferencia de conocimiento, sino y además, de generación de conocimiento y de posibles transformaciones vía la investigación.
Interdisciplinariedad y transdiciplinariedad en la ciencias sociales y humanas: convergencias entre el giro lingüístico y la obra de Pierre Bourdieu
Authors: Atehortúa Sánchez Jaime Arbey , Vallejo Cardona Jesús David
Published: August 2022

El artículo hace un recuento de los autores y nociones más representativos en los giros lingüísticos y semióticos, para luego desembocar en las propuestas de inter y transdisciplinariedad en las Ciencias Sociales, con base en la obra de Pierre Bourdieu. A partir de ahí, el texto busca encontrar los momentos de convergencia entre algunos conceptos de Bourdieu —como los de habitus, campos, poder y violencia simbólica— y las tomas de consciencia semiótica y lingüística, con el fin de demostrar la vigencia y el valor no solo de los aportes del sociólogo francés, sino también de las claves de correlación entre las humanidades y la sociología, que representan los momentos de retorno a las disciplinas del lenguaje y de los signos. Al final se concluye que los aportes de Bourdieu logran, a partir del retorno a la lingüística, configurar una alternativa de salvación ante la crisis que enfrentan las ciencias humanas y sociales en laactualidad.
La educación en ciencias: un espacio para la configuración de subjetividad ética-política
Authors: Henao Sierra Berta Lucila
Published: August 2022

Este escrito presenta consideraciones acerca de los desafíos y posibilidades que hoy tiene la educación en ciencias, como campo de conocimiento y práctica cultural. En este horizonte, dirigimos la mirada a la formación de sujetos críticos comprometidos con la construcción de alternativas de solución a problemáticas inherentes a un mundo caracterizado por la presencia de las tecnociencias y sus implicaciones socioculturales. Aludimos a una formación en ciencias, inseparable de la configuración de subjetividad ético-política; opción formativa que concretamos en una propuesta pedagógica centrada en discusiones y acciones en torno a problemas sociocientíficos (PSC). Al respecto, transitamos por algunas preguntas inherentes a dicha propuesta: la primera, relacionada con las problemáticas que pretenden atender al por qué de la misma; la segunda, referida a los propósitos que conlleva, es decir, el para qué; la tercera y cuarta, aluden a qué cuestiones conviene trabajar y cómo tratar pedagógicamente asuntos que permitan a los estudiantes aprender ciencias, al tiempo que se configuran como sujetos políticos en resistencia a los dogmatismos, al antropocentrismo y al consumismo.