bluuebunny/crossref_metadata_2025 huggingface dataset:
Toxicity of Cisplatin and Herbal Medicine Complexed with Bovine Serum Albumin (BSA) and Folic Acid Nanoparticles as Anticancer Candidates
Authors: Nidianti Ersalina , Amalia Rizka , Firdaus Nisrina Salsabila
Published: February 2023

The prevalence of cancer in Indonesia has increased by 8.8 percent in the last two years (2018 and 2020) in terms of adding new cases and mortality. Because of therefor cancer treatment becomes important in reducing the high number of additional new cases and mortality due to cancer patients. Intensive cancer treatment is by surgery, chemotherapy, radiotherapy and immunotherapy. Chemotherapy drugs used for cancer treatment include herbal plant-based cancer drugs (Cancer Fit) and cisplatin its buy from online shop. This study aims to compare the toxicity of herbal drugs (Cancer fit) with cisplatin, a combination of BSA nanoparticles and folic acid as anticancer candidates. The research method is through the synthesis of nanoparticles with the desolvation method, then characterization is carried out using XRD and FT-IR tests. After that proceed to the toxicity test with the BSLT method. The results obtained from XRD analysis on BSA and folic acid nanoparticles from cisplatin (As-NP-BSA-CP) showed a peak of 34.45 while BSA and folic acid nanoparticles from herbal medicine (As-NP-BSA-Oh) obtained a peak of 22.77. The purpose of XRD analysis was to determine the crystalline characteristics of the synthesized nanoparticles and to analyze the crystalline index. FT-IR analysis on (As-NP-BSA-CP) showed that there are functional groups O-H alcohol, C-H, C-C, NO2 that play a role in the synthesis of nanoparticles. Meanwhile, (As-NP-BSA-Oh) showed that the functional groups were C-H alkene, C-O alcohol, and C-N amine/amide. The toxicity level of As-NP-BSA-CP LC50 is 69.14 ppm while the toxicity level of As-NP-BSA-Oh LC50 is 44.14 ppm. Nanoparticles consisting of a combination of bovine serum albumin (BSA), folic acid and cisplatin drugs or herbal drugs can be used as candidates for anticancer drugs.
The abundance of the potential pathogen Staphylococcus hominis in the air microbiome in a dental clinic and its susceptibility to far-UVC light
Authors: Muro Marilena Aquino de , Shuryak Igor , Tillman Alice , Seeram Dwayne , Uhlemann Anne-Catrin , Zakaria Joseph , Welch David , M Steven Erde , J David Brenner
Published: February 2023

The dental clinic air microbiome incorporates microbes from the oral
cavity and upper respiratory tract (URT). This study aimed to establish
a reliable methodology for air sampling in a dental clinic setting and
quantify the abundance of culturable mesophilic aerobic bacteria present
in these samples using regression modeling. Staphylococcus hominis, a
potentially pathogenic bacterium typically found in the human oropharynx
and URT, was consistently isolated. S. hominis was the most abundant
species of aerobic bacteria (22% to 24%) and comprised 60% to 80% of
all Staphylococcus spp. The study also assessed the susceptibility of S.
hominis to 222nm-far-UVC light in laboratory experiments, which showed
an exponential surface inactivation constant of k = 0.475 cm2/mJ. This
constant is a critical parameter for future on-site use of far-UVC light
as a technique for reducing pathogenic bacterial load in dental clinics.
A Text Mining Approach to Characterizing Interpersonal Stress among Individuals with a Nonsuicidal Self-Injury History
Authors: Ammerman Brooke , Wilcox Kenneth Tyler , Jacobucci Ross , Dixon-Gordon Katie , Waite Elinor E. , McCloskey Michael
Published: February 2023

Objective: Interpersonal difficulties are salient among those
with a history of NSSI and precede NSSI urges and behaviors. Yet,
limited research has focused on identifying which aspects of
interpersonal stress may confer risk for NSSI. Method: The
current study aimed to leverage data from two samples (combined
n=206; n=114 with NSSI history) of participant-driven
interviews regarding a recent interpersonal stressor to enhance the
field’s knowledge of interpersonal difficulties in relation to NSSI
risk. Results: Using topic modeling to extract thematic
information, analyses identified four main topics: daily difficulties;
family members; adjectives/verbal fillers; and friendship/romantic
relationships. Relationships between the topics and three predictors
(i.e., NSSI history, emotion dysregulation, sample) were examined. In
one sample, the proportion of ‘adjectives/verbal fillers’ was greater
for participants with a NSSI history and at higher levels of emotion
dysregulation. Across samples, for participants with a NSSI history,
‘adjectives/verbal fillers’ and ‘friendship/romantic partners’ increased
with levels of emotion dysregulation. Conclusion: Findings
highlight a greater use of adjectives and verbal fillers among
individuals with a history of NSSI and higher levels of emotion
dysregulation. This pattern of language may serve as an indicator of a
specific aspect of emotion regulation difficulties that confers risk for
NSSI.
Depression and Anxiety in Infertility Patients
Authors: Shen Yifeng , Liao Tingting , Zhu Kun , Zhou Jing , Huang Xiaopeng , Chang Degui , You Yaodong
Published: February 2023

Depression and anxiety are common emotional responses among infertility
patients, with research showing that they can negatively impact the
mental well-being and quality of life of individuals struggling with
infertility. This study aimed to conduct a bibliometric analysis of the
existing literature on depression and anxiety in infertility patients,
in order to shed light on the current state of research and identify
potential areas for future study. The majority of research on depression
and anxiety in infertility patients has been conducted in recent years,
with a growing interest in the topic. Numerous investigations have
assessed the effect of infertility treatments on patients’ psychological
health, with some examinations delving into the application of cognitive
behavioral therapy and mindfulness-based stress reduction as potential
methods for mitigating symptoms of depression and anxiety. Polycystic
ovary syndrome, fertility preservation of cancer patients, COVID-19
pandemic, and assisted reproductive technology are also hot spots in
this field. The findings of this bibliometric analysis highlight the
importance of addressing depression and anxiety in infertility patients,
and imply that further investigation is required to fully comprehend the
intricate connections between infertility, depression, and anxiety.
Demographic profile of statistical regions and new territorial units of Latvia in 2020-2021
Authors:   University of Latvia, Dahs Aleksandrs , Krumins Juris ,   University of Latvia, Berzins Atis ,   University of Latvia, Lece Kristine
Published: February 2023

Ongoing shifts in administrative-territorial boundaries, effects of the COVID-19 pandemic, as well as continuous social and economic challenges facilitate a hasty change of Latvia’s regional demographic profile. To keep up with the current demographic processes and challenges on the regional level and provide realistic policy-oriented proposals, researchers must constantly monitor the changing demographic landscape and listen closely to the opinion trends prevalent among the regional populations. In this paper authors aim to provide an updated demographic portrait of Latvia’s statistical regions and new territorial units created after the territorial reform of 2021. Special attention is given to the discrepancies between rural and urban population dynamics on different territorial levels. This study relies on the most recent statistical information and presents several key findings of the survey carried out throughout the country within the framework of research project “DemoMig”. Study results indicate a deepening rural-urban divide in terms of demographic development on both regional and local levels. Some noteworthy distinctions can be found between the statistical regions of Latvia in terms of demographic development challenges and populations’ opinion about them. Survey results also provide important conclusions regarding the inhabitants’ perceptions about impact factors of population change on various territorial levels.
Environmental attitudes and behaviour of Latvians: insights from a social survey
Authors:   University of Latvia, Nikisins Jurijs
Published: February 2023

This study draws upon various and somewhat contradictory findings from previous research on the relationship between environmental views and actions. The key interest is to explore whether economic growth and protection of the environment are seen as compatible or conflicting goals, and how both relate to pro-environmental behaviour that people of Latvia engage in. The study is based on quantitative analysis of data from a nationwide representative survey of 1015 residents of Latvia conducted in November 2021. The results suggest that Latvians perceive economic development and environmental protection mostly as mutually dependent goals, and even those believing that the concern for the environment has gone too far at the expense of economic development still report practicing certain pro-environmental actions on a regular basis. Specifically, buying locally sourced and seasonal foods whenever possible, sorting different kinds of waste for recycling, and trying to reduce the consumption of disposable items like plastic bags are reported most often by the respondents. In the concluding part, the limitations of the present study as well as potential venues for future research are briefly discussed.
Modalidades de aprendizaje y rendimiento académico en estudiantes universitarios
Authors: Romero Gutiérrez José Marcelino , Zambrano Ortega Teres Jesús
Published: February 2023

La presente investigación realiza un análisis comparativo del rendimiento académico de los estudiantes de una asignatura transversal homologada en diferentes periodos académicos y en diferentes modalidades de estudio (online, b-learning y presencial). La investigación propuesta se ajusta al modelo no experimental, puesto que se analizó la incidencia de las modalidades de estudio en el rendimiento académico de los estudiantes en la asignatura en estudio. Se midió los resultados obtenidos de 361 estudiantes universitarios entre 17 a 25 años de edad (hombres = 54.5 %, mujeres= 45.4 %), en los periodos académicos 201801-201802-201901. Se realizó un procedimiento ad hoc y un tratamiento estadístico descriptivo, comprobación de hipótesis con análisis de varianza, prueba de heterogeneidad de las varianzas (Welch y Brown-Forsythe); finalmente una post hoc de comparación múltiple. Los resultados demuestran que existen diferencias significativas ( > 0.05) con referencia a la modalidad de estudio y el rendimiento académico. Los estudiantes en la modalidad presencial y online no muestran diferencias significativas entre calificaciones, pero los de la modalidad b-learning obtienen mejores resultados.
ANALISIS PERANAN GURU DALAM MEMBINA KEDISIPLINAN BELAJAR SISWA KELAS IV DI SDIT ZAHRA ASY-SYIFA
Authors: Yumni Auffah , Azis Ainul Masthura
Published: February 2023

Analysis of the Teacher's Role in Fostering Learning Discipline for Class IV Students at SDIT Zahra Asy-Syifa. The purpose of this study was to determine the level of discipline in class IV students through the role of the teacher at SDIT Zahra Asy-Syifa in semester II of the 2021/2022 school year. The subjects in this study were the school principal, homeroom teacher for class IV, some 28 class IV students. This study uses a qualitative methodology with a descriptive approach where the design can be improved at any time depending on the conditions and situation in the field. Then in the data collection process using three data collection techniques namely, participating observation, semi-structured interviews and documentation. As for the data analysis technique using descriptive analysis from Miles and Huberman which consists of data reduction, data presentation, and drawing conclusions. The results of the study reveal that: 1) there is a teacher's role in fostering student learning discipline, namely the teacher as a teacher, mentor, counselor, evaluator and model/exemplar; 2) It turns out that teachers are still having problems in instilling discipline in student learning as seen from two factors, namely: a) students and b) family and the surrounding environment; 3) The teacher makes several efforts in instilling discipline including: a) instilling exemplary behavior, b) giving rewards and punishments, c) reinforcing the application of the rules.
THE USE OF THE DUOLINGO GUESSING GAME APPLICATION IN TEACHING SPEAKING ABILITY TOWARD 8TH - STUDENTS
Authors: Emelia Tengku Winona , Sari Ambar Wulan , Khaidir Khaidir
Published: February 2023

The Use Of The Duolingo Guessing Game Application In Teaching Speaking Ability Toward 8th - Students. This study was aimed to analyze how students use the game application named Duolingo, as an English learning application, to evaluate its benefit to help students in learning English and to assess students' skills in speaking. The data for this research was collected by using post and pre-test methods in research techniques. The data source was students from SMP Muhammadiyah 1 Medan, focused on 8th grade by providing multiple-choice questions by using Duolingo Applications. The quantitative design was used in this study and the techniques for data analysis include (1) data collection procedures, (2) data analysis techniques, and (3) conclusions. Based on analysis findings, students provided improvements to English learning and they speak more smoothly with a better tone. However, learning English has a number of advantages, and since Duolingo is a form of multiple choice test so the students enjoy, and it help the problem of speaking and use repetition of words so the students can follow how to say or speak.
Pengaruh kombinasi limbah ampas Kelapa, Nanas, dan Pepaya terhadap konsumsi pakan, efisiensi konversi, dan pertumbuhan maggot Hermetia illucens L.
Authors: Lamin Syafrina , Nofyan Erwin , Mayasari Astrid
Published: February 2023

Salah satu jenis sampah yang ada ditimbun di TPA adalah sampah organik. Sampah organik ini dapat dikurangi dengan cara pengomposan. Namun proses ini membutuhkan waktu yang cukup lama yaitu 3-4 bulan hingga sampah benarbenar terurai. Sampah organik yang tidak dengan cepat diolah akan menimbulkan bau yang menyengat atau bau tidak sedap. Maggot dari lalat Hermetia illucens dapat dijadikan sebagai pengurai sampah organik menjadi partikel yang lebih kecil, selain itu juga maggot dapat dibiakkan dan dijadikan pakan unggas/ikan. Untuk mengetahui keefektifan hidup maggot H. illucens, perlu dilakukan pengujian dalam aspek biologi seperti, konsumsi pakan, efisiensi konversi, dan laju pertumbuhan maggot. Tujuannya untuk menentukan konsumsi pakan, efisiensi konversi, dan laju pertumbuhan maggot H. illucens pada masing-masing variasi komposisi sampah buah dan dedak padi. Rancangan Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan 5 perlakuan dan masingmasing perlakuan dilakukan 5 kali pengulangan. Hasil dari penelitian ini didapatkan Komposisi limbah organik yang paling tinggi untuk konsumsi pakan maggot H. illucens, yaitu pada komposisi dedak fermentasi 50% dan pepaya 50% dengan rata-rata konsumsi pakan 77,80%. Komposisi limbah organik yang paling tinggi untuk efisiensi konversi maggot H. illucens, yaitu komposisi dedak fermentasi 50% dan pepaya 50% dengan rata-rata efisiensi konversi 0,31%. Komposisi limbah organik yang paling tinggi untuk pertumbuhan maggot  H. illucens, yaitu komposisi dedak fermentasi 50% dan pepaya 50% dengan rata-rata bobot 0,26 g dan rata-rata panjang maggot 1,88 cm. Kesimpulannya dari penelitian ini yaitu pertumbuhan maggot H. illucens yang paling tinggi dengan menggunakan komposisi media pepaya 50% dan dedak fermentasi 50% dan salah satu faktor yang mempengaruhi pertumbuhan maggot H. illucens adalah kuantitas dan kualitas media pakan.
El espacio no existe. Su problemática expresiva en el arte y el diseño
Authors: Amoroso Boelcke Nicolás
Published: February 2023

El primer bloque está dividido en cinco capítulos. El capítulo uno referirá al espacio que compartimos con nuestros congéneres y con aquellos desconocidos que probablemente habitan más allá en otras galaxias. … El capítulo dos está dedicado a Nicolai Hartmann quien ha trabajado las categorías filosóficas que permiten aprehenderlo. Este capítulo permitirá, en definitiva, plantearnos las preguntas básicas que intentaremos responder en los puntos sucesivos. El capítulo tres intenta descifrar en nuestro planeta y en su historia el desarrollo de las fuerzas sociales que fueron configurando las distintas espacialidades. Este tercer capítulo lo hemos denominado como Sociología de la Espacialidad. … El capítulo cuatro se centrará en las condiciones que permiten que se lo piense desde ciertos ángulos que terminan ocultando su realidad última mediante configuraciones que lo racionalizan. … el quinto capítulo tendrá la visión desde el interior de cada quién partiendo de la idea de la piel como límite entre el ser y el espacio, lo hemos llamado psicología en el espacio. … el segundo bloque, Formas en el espacio, conformado por tres capítulos, nos permitirá introducirnos en una temática más específica abordando aspectos generales que involucran a diversas manifestaciones artísticas y su relación con nuestro protagonista: el espacio y la percepción; el espacio e imaginación; el espacio y realidad virtual. … Con el grupo tres, El espacio en la práctica artística, conformado por 8 capítulos, entramos de lleno en el desarrollo de distintas disciplinas artísticas: La espacialidad en la narrativa. Espacialidad y arquitectura. Teatralidad de la especialidad. La espacialidad cinematográfica. El espacio plástico. El espacio fotográfico. El diseño y la construcción del espacio, por último, espacialidad urbana.
Baer submodules of modules over commutative rings
Authors: ANEBRI Adam , KIM Hwankoo , MAHDOU Najib
Published: February 2023

Let $R$ be a commutative ring and $M$ be an $R$-module. A submodule $N$ of $M$ is called a d-submodule $($resp., an fd-submodule$)$ if $\ann_R(m)\subseteq \ann_R(m')$ $($resp., $\ann_R(F)\subseteq \ann_R(m'))$ for some $m\in N$ $($resp., finite subset $F\subseteq N)$ and $m'\in M$ implies that $m'\in N.$ Many examples, characterizations, and properties of these submodules are given. Moreover, we use them to characterize modules satisfying Property T, reduced modules, and von Neumann regular modules.
A note on the solvability of a finite group in which every non-nilpotent maximal subgroup is normal
Authors: LIU Wenjing , SHI Jiangtao , TIAN Yunfeng
Published: February 2023

We provide a new and simple proof to show that a finite group in which every non-nilpotent maximal subgroup is normal is solvable.
A review on the biology and management of potato tuber moth
Authors: Adhikari Aakash , Oli Dipiza , Pokhrel Ashim , Dhungana Babita , Paudel Bipul , Pandit Shishir , Bigyan G C , Dhakal Apurba
Published: February 2023

The potato tuber moth (PTM; caused by Phthorimaea operculella) is one of the most serious insect pests that causes damage to crop production and storage of potatoes. It causes damage to the potato, while larvae of P. operculella feed on and grow in the leaves and tubers of potatoes, resulting in direct product losses. The larvae construct tunnels through tubers and mine leaves, stems, and petioles, resulting in uneven galleries. Foliar damage to the potato crop does not normally result in major output losses, although contaminated tubers may have lower marketability and storage losses of up to 100%. Light watering every 4 days and mulching with neem leaves during the last 4 weeks before the harvest was found to be a successful treatment. Spraying a thin layer of testing natural oils also acts as a defensive layer, which causes confusion or disturbance to the searching neonate larvae. The pest is tough to eradicate, so producers rely heavily on insecticides and biological approaches. Potato tuberworm damage was reduced by rotating esfenvalerate and indoxacarb treatments before and after vine kill. At 5 g/kg potato tuber in farmer rustic storage, Acorus calamus dust exhibited great efficiency in preventing PTM tuber damage. In different regions of the world, parasitoids such as Copidosoma spp. and Apanteles spp. are significant in PTM management. Pheromone traps are used for pest population monitoring as well as pest management in the field and during storage.
Herbicide control of Ambrosia artemisiifolia in sunflower, soybean and maize
Authors: Máčajová Patrícia , Tóthová Monika , Krchňavá Veronika , Týr Štefan , Tóth Peter
Published: February 2023

Ambrosia artemisiifolia L. (Asteraceae) has become a major threat to agriculture in many parts of the world. Global agriculture relies on the use of herbicides against A. artemisiifolia in the crops most at risk – sunflower, maize and soybean. This paper aims to provide an overview of the chemical control of A. artemisiifolia and to summarize the latest knowledge in this field. The sunflower is the crop most threatened by A. artemisiifolia, as both plants belong to the same family. The best control level was achieved after the preemergence application of flurochloridone and the combination of dimethenamid-P + pendimethalin. The introduction of the non-GM Clearfield and ExpressSun technologies allowed effective control with postemergence herbicides in sunflower varieties tolerant to imidazolinone and tribenuron-methyl herbicides. In soybean, the highest efficacy was observed in trials with imazamox and bentazone alone and in combination. The combination of imazamox with bentazone had a positive effect on yield compared to untreated stands. The introduction of transgenic soybeans tolerant to glyphosate led to increased glyphosate use and the predictable emergence of weed resistance in America in 1996. Preplant followed by postemergence herbicides were critical for the effective control of glyphosate-resistant A. artemisiifolia in glufosinate tolerant soybean. In maize, the highest efficacy was obtained after the application of glufosinate, bromoxynil and mesotrione + atrazine. Of the above substances for the control of A. artemisiifolia in maize, only mesotrione is currently registered in the EU.
The transmission of plant viruses
Authors: Grešíková Simona
Published: February 2023

Plant viruses are a threat to a sustainable economy because they cause economic losses in yields. The epidemiology of plant viruses is of particular interest because of their dynamic spread by insect vectors and their transmission by seeds. The speed and direction of viral evolution are determined by the selective environment in which they are found. Knowledge of the ecology of plant viruses is critical to the transmission of many plant viruses. Accurate and timely detection of plant viruses is an essential part of their control. Rapid climate change and the globalization of trade through free trade agreements encourage the transmission of vectors and viruses from country to country. Another factor affecting the emergence of viruses is the cultivation of monocultures with low genetic diversity a nd high plant density. Trade in plant material (germplasm and living plants) also cause the emergence of new viruses. Viruses have a fast adaptation and development in a new environment. Aphids are the most widespread and important vectors of plant viruses. Myzus persicae transmits more than 100 different plant viruses. In nature plant viruses are transmitted also by nematodes, fungi, mites, leafhoppers, whiteflies, beetles, and planthoppers. The symptoms of viral diseases are very diverse and are often confused with symptoms of abiotic stress. Control of viral diseases is based on two strategies: i) immunization (genetic resistance acquired by plant transformation, breeding, or cross-protection), ii) prophylaxis to limit viruses (removal of infected plants and control of their vectors). For management, we rely on quick and accurate identification of the disease.
Assessment of the effectiveness of fish passage through the vertical-slot fishway at the main dam on the longest Baltic River
Authors: Dębowski Piotr , Bernaś Rafał , Radtke Grzegorz , Święcki Waldemar
Published: February 2023

In 1969, a dam was constructed on the Vistula River, the longest in the Baltic drainage basin, 276 km from its estuary, which resulted in the collapse of migratory fish populations throughout the drainage basin. The existing, ineffective fishway was rebuilt in 2014. Monitoring at the new fishway indicated that 24 fish species used it, and over a period of five years the number of individuals fluctuated from nearly 4,000 to over 23,000. Radio frequency identification (RFID) technology was used to investigate 12 fish species, mostly vimba and bream, passing through the fishway. Fish caught in a trap in the upper part of the fishway were tagged with PITs and then released below the dam. Returning fish were recorded by four loop antennas. Of the 877 fish that were tagged, 13% returned to the fishway mostly on the first and fourth days following release. Of the fish that returned, 30% turned back while passing through the fishway: 30% vimba and 52% bream. The transit time of vimba and bream did not depend on fish size or the time after which they returned. Overall, estimated fishway efficiency based on the migration of the tagged fish was high.
Can the elimination of cyanobacteria by micro-sieving be an innovative lake purity improvement method?
Authors: Napiórkowska-Krzebietke Agnieszka , Łuczyński Marek
Published: February 2023

The removal of harmful cyanobacteria has recently become an important target in water management strategies. Various methods have been developed to eliminate these microorganisms including: (1) biological methods, especially with floating treatment wetlands and riparian vegetation; (2) physical methods with aeration, mechanical circulation, and hypolimnetic oxygenation; (3) chemical methods with coagulation and flocculation processes; (4) barley straw. We propose that the in situ mechanical-based micro-sieving process provides an opportunity for this to succeed in practice. The appropriate, selective technical parameters and techniques can result in successful water quality improvement, which is essential to meet Water Framework Directive goals and especially for public health. Additionally, micro-sieving used for removing Gloeotrichia can contribute to a significant reduction in internal phosphorus loads, a necessary step in lake restoration. The theoretically probable mean cell-bound P-content transferred with G. echinulata colonies (during strong blooms) can be as high as 48 mg L−1, and this potential P-load is usually deposited on lake bottoms. The removal of cyanobacterium can result in significant limitations of internal P-sources. The method presented above could be a promising, practical, easy-to-use, and cost-effective method for managing and limiting cyanobacterial blooms.
Impact of replacing natural food with commercial feed on the growth and survival of blue bream larvae (Ballerus ballerus) under controlled conditions
Authors: Piech Przemysław , Kujawa Roman
Published: February 2023

The effect of replacing natural food with commercial feed on the growth and survival of blue bream, Ballerus ballerus (L.), larvae reared under controlled conditions was investigated. Live food, brine shrimp, Artemia sp. (A), nauplii, was replaced after four (A4P17), eight (A8P13), and 12 (A12P9) days with commercial feed (P). The control groups were larvae fed nauplii (A21) or feed (P21) exclusively for throughout the experiment. The density of larvae was 40 ind. dm−3, and the rearing temperature was 25 ± 0.5°C. The highest blue bream larval growth rate in the groups fed the commercial feed tested was in group A12P9, in which larvae reached an average body weight of 56.1 mg with an average total length of 21.1 mm. These values were only slightly lower than those obtained in the A21 control sample. Final larval survival in each of the feeding groups ranged from 67% (A4P17) to 93% (A12P9). The larval lowest survival and growth parameters were recorded in control group P21, in which larvae received only commercial feed; this indicated the necessity of using natural food when rearing blue bream larvae.
Effects of high salinity on the growth of juveniles and pre-adult European sea bass (Dicentrarchus labrax)
Authors: Young Benjamin C. , Al Shaikhi Ali
Published: February 2023

Diversifying aquaculture in Saudi Arabia with the inclusion of finfish species already reared in the Mediterranean Sea requires a sufficient understanding of the preferences and limits of cultured fish under local conditions. Two trials involving European seabass, Dicentrarchus labrax (L.) juveniles of 126 g and pre-adult fish of 313 g were carried out in Saudi Arabia. The trials tested four locally available commercial feeds for 84 and 80 days to determine the growth performance of fish in local high salinity 42-45‰ conditions. The average final weight in juveniles was not significantly different among treatments. The weight gain was smaller in Diet 3, while the specific growth rate was highest in Diet 1 and smallest in Diet 3. The feed conversion ratio was similar in all diets. The average final weight in pre-adult fish showed no significant differences in final body weight, weight gain, or feed intake. The growth results appear to be in line with related research. Improvement of nutritional characteristics of the feed is expected to improve the performance of the fish.
Histopathological changes from parasitic Nematoda infestation in the musculature of some marine teleost fishes from the Algerian coast
Authors: Ramdani Souhila , Trilles Jean-Paul , Ramdane Zouhir
Published: February 2023

Numerous marine fishes from the Algerian coast were examined for nematode parasites. Our study revealed five species of nematodes that were identified according to morphological characteristics: Anisakis
simplex, Hysterothylacium aduncum, Hysterothylacium reliquens, Hysterothylacium fabri, Dichelyne pleuronectidis. D. pleuronectidis was newly collected from the study region. Four new host species were recorded for A. simplex, six for H. aduncum, and three for H. fabri. The infection rates observed were higher for Hysterothylacium and Dichelyne than Anisakis. The highest infection rate by Nematoda parasites were recorded for Trachinus draco L., Pagellus acarne (Risso) and Mullus barbatus L. (P = 100%, P = 53.33%, P = 42.5%), respectively. Nematoda larvae were found in body cavity and musculature. Histological changes associated with nematode musculature infestation revealed myodegeneration of fibers with a loss of striated texture and skin damage.
A comparative assessment of the antibacterial activity of extracts derived from leaves of various Ficus species (Moraceae) against fish pathogens
Authors: Tkachenko Halyna , Pękala-Safińska Agnieszka , Buyun Lyudmyla , Kurhaluk Natalia
Published: February 2023

The aim of the study was to compare the in vitro antibacterial activity of leaf extracts obtained from various Ficus species against four bacterial strains of fish pathogens (Serratia liquefaciens, Yersinia ruckeri, Pseudomonas fluorescens, Shewanella putrefaciens). In vitro tests for antibacterial activity assessment revealed that various Ficus species have notable antibacterial efficacy. The six most effective Ficus plants against S. liquefaciens that caused a zone of inhibition of at least 15 mm were F. lingua, F. erecta, F. rubiginosa, F. tinctoria, F. sur, and F. aspera. The maximum antimicrobial activity against the Y. ruckeri strain was observed for ethanolic extracts of F. hederacea, F. formosana, and F. hispida. Our results also demonstrated that the Pseudomonas fluorescens strain exhibited high susceptibility to ethanolic extracts derived from 20 plants (the mean value of inhibition zone diameters (IZD) was more than 15 mm). F. erecta, F. sur, and F. virens extracts were more effective against P. fluorescens. The Shewanella putrefaciens strain revealed a high level of susceptibility to ethanolic extracts derived from the leaves of 32 species (the highest value of the IZDs was observed for F. erecta). The data presented in the current study indicated that ethanolic extracts derived from leaves of various Ficus species are a promising alternative to the use of antibiotics and chemotherapeutics in controlling infections caused by the Serratia liquefaciens, Yersinia ruckeri, Pseudomonas fluorescens, and Shewanella putrefaciens strains.
Prime Representing Polynomial with 10 Unknowns
Authors: Pąk Karol
Published: February 2023

In this article we formalize in Mizar [1], [2] the final step of our attempt to formally construct a prime representing polynomial with 10 variables proposed by Yuri Matiyasevich in [4].

The first part of the article includes many auxiliary lemmas related to multivariate polynomials. We start from the properties of monomials, among them their evaluation as well as the power function on polynomials to define the substitution for multivariate polynomials. For simplicity, we assume that a polynomial and substituted ones as i-th variable have the same number of variables. Then we study the number of variables that are used in given multivariate polynomials. By the used variable we mean a variable that is raised at least once to a non-zero power. We consider both adding unused variables and eliminating them.

The second part of the paper deals with the construction of the polynomial proposed by Yuri Matiyasevich. First, we introduce a diophantine polynomial over 4 variables that has roots in integers if and only if indicated variable is the square of a natural number, and another two is the square of an odd natural number. We modify the polynomial by adding two variables in such a way that the root additionally requires the divisibility of these added variables. Then we modify again the polynomial by adding two variables to also guarantee the nonnegativity condition of one of these variables. Finally, we combine the prime diophantine representation proved in [7] with the obtained polynomial constructing a prime representing polynomial with 10 variables. This work has been partially presented in [8] with the obtained polynomial constructing a prime representing polynomial with 10 variables in Theorem (85).
Formalization of Orthogonal Decomposition for Hilbert Spaces
Authors: Okazaki Hiroyuki
Published: February 2023

In this article, we formalize the theorems about orthogonal decomposition of Hilbert spaces, using the Mizar system [1], [2]. For any subspace S of a Hilbert space H, any vector can be represented by the sum of a vector in S and a vector orthogonal to S. The formalization of orthogonal complements of Hilbert spaces has been stored in the Mizar Mathematical Library [4]. We referred to [5] and [6] in the formalization.
Lean Experience Analysis at a Leading Automotive Manufacturer in Vietnam
Authors: Nguyen Dat Minh
Published: February 2023

Over the last decades, thanks to the increased pressure to reduce cost and to be more responsive to customer demands as well as improving continuously to the value provided to them, the business has been motivated for managing their operation responsibly in regards to the economical, environmental and social aspects as well. In order to fulfill this mission, encouraged companies and researchers have been finding ways to meet customer demands and sustainable requirements. Lean is one of the systematic approaches to achieving higher value for organizations by eliminating non-value-added activities. Through a case study, the research aims is to present the effectiveness of sustainable improvement on economic, social, and environmental improvement from the perspective of Lean practices. The analysis of the day-to-day Lean practices experience in a case study a good experience for enterprises in desiring applies Lean for sustainable development, can be extremely effective at developing management techniques to achieving sustainable improvement.
Social Manufacturing On Integrated Production System: A Systematic Literature Review
Authors: Sari Marti Widya , Herianto  , Dharma IGB Budi , Tontowi Alva Edy
Published: February 2023

Currently, the development of information technology in all fields is very rapid, including in the manufacturing sector, thus making the social environment of manufacturing change a lot. Traditional manufacturing research focuses on applying technology, such as production models, supplier arrangements, automation, advanced machines in the manufacturing industry, etc. Global competition and increasingly diverse customer demands are a phenomenon that occurs today. Social manufacturing is a new distributed, collaborative, and intelligent manufacturing, that every consumer can participate in the entire process of product design, manufacture, and even marketing. This study aims to examine the development of social manufacturing systems and the latest research in social manufacturing. The method used is to review the latest papers related to social manufacturing that provide a new paradigm for the manufacturing industry, then map based on the concepts, frameworks, and technologies used. The results of this review paper are in the form of mapping research papers taken from the database of a reputable international journal, Scopus. The mapping includes data on the author, co-author, terms on social manufacturing paper, year of publication, type of document and publisher. This systematic literature review can be one of the references for basic research on social manufacturing.
Production Value Chain Model for Sustainable Competitive Advantage
Authors: Al-Shammari Minwir M.
Published: February 2023

In the Fourth Industrial Revolution, 4IR, manufacturing firms face more competitive environments, rapidly changing information and communication technologies (ICTs), and customers’ preferences than ever before. This paper analyzes relevant literature and proposes a systemic customer-centric knowledge-based production value chain (KPVC) to leverage distinctive core competencies (DCCs) and create sustainable competitive advantage (SCA) in manufacturing contexts. The paper introduces an integrative customer-centric KPVC model that enables companies to respond to environmental drivers, leverage DCCs, and create SCA. It adopts an exploratory approach to developing a unified and inherently interdisciplinary model based on a review of relevant scholarly literature. The KPVC integrated model comprises production value chain (PVC), knowledge management (KM) processes, and business process re-engineering (BPR) enabling activities. A successful move to KPVC requires a fully integrated and automated system allowing firms to define, track, and manage their work processes. Effective KPVC is a principal approach for leveraging DCCs in the quest for achieving SCA in today’s competitive business world and generating better values for customers and companies.
Assessment of the Impact of Working Risks in the Exploitation of Raw Materials
Authors: Seňová Andrea , Pavolová Henrieta , Škvareková Erika
Published: February 2023

The presented article deals with the use and evaluation of individual risks of work in the environment of Slovak mining company. The mining company is also a manufacturing company. The company mines the raw material and the final product (clinker). The main goal of the article is to monitor the incidence of accidents over the last 10 years, to analyse the group of risks that have a significant impact on accidents in mining companies and to evaluate them. The Risk Matrix, shows the relationship between estimated consequences and probability of risks formation. The next step is to use the workplace Risk Assessment Method to define acceptable risks and minimize the impact on workers. Another method we used is the Fault Tree Analysis (FTA) model. The output of the FTA model is the creation of a faulty tree, which resulted in the individual traumatized accidents that resulted in the definition of the resulting risk - namely a load injury.
Fatigue Life of Compacted Wire Ropes for Applications in Deep Mining
Authors: Kubiś Bogusław , Olszyna Grzegorz , Szade Piotr , Tytko Andrzej
Published: February 2023

Recent months have highlighted the progressing energy crisis across Europe in connection with the severe sanctions imposed on the import of hydrocarbons and coal from Russia. This is particularly visible in Poland, where over 40% of electricity is generated from coal, while in individual households it is the primary source of heat. This situation puts the already enigmatic plans of shutting down coal mining in Poland into question. Therefore, work aimed at increasing the extraction capacity of existing shafts while maintaining the highest level of operational safety is still valid. This article concerns the issues of the fatigue life of compacted ropes used as hoist ropes in mine shafts. The discussion regarding the use of these ropes among shaft hoist users has been going on for several years. This paper presents the unique results of compacted rope fatigue tests carried out at the Central Mining Institute in Katowice. In the authors’ view, these results and their interpretation should serve to clarify several important aspects that arouse the interest of users.
Effect of alkali metal promoters on catalytic performance of Co-based catalysts in selective hydrogenation of aniline to cyclohexylamine
Authors: Valeš Roman , Zapletal Martin , Krupka Jiří
Published: February 2023

In this study, a series of Co-based catalysts with alkali metal carbonate promoters were prepared to investigate the interrelation between promotion effect of these carbonates and catalytic performance for aniline hydrogenation to cyclohexylamine in vapour phase. The chemical promoters Li2CO3 and Na2CO3 leading to decrease in catalytic activity of cobalt catalysts for aniline hydrogenation. Catalysts with K2CO3 and Cs2CO3 loadings have practically no catalytic activity for hydrogenation of aniline. Results of TPD of aniline proved that presence of alkali metals carbonates restricts the adsorption of aniline on the surface of cobalt catalysts. Further, it was found that the addition of Na2CO3 greatly enhances the catalytic selectivity towards the cyclohexylamine and inhibits the consecutive reactions of cyclohexylamine leading to formation of by-products such as dicyclohexylamine and N-phenylcyclohexylamine.
Fabrication of YSZ coatings on nickel-based alloys by anodic electrophoretic deposition
Authors: Binxia Yuan , Tianzhong Chen , Yongzhi Shang , Haibo Xue , Min Li
Published: February 2023

In the paper, YSZ coatings were prepared on nickel-based alloy substrates by anodic electrophoretic deposition. The YSZ suspension solution was obtained under stirring and ultrasonic treatment, in which the anhydrous ethanol and acetylacetone were used as the dispersion medium and ammonium polyacrylate was used as the dispersant of the suspension. The effects of different deposition voltage and deposition time on YSZ coating were investigated. Meantime, the microstructure of the coating surface was observed by metallographic microscope. It was found that the high-quality YSZ coating could be obtained by deposition at 60 V for 2–3 min. Finally, the effect of sintering temperature on coating quality was investigated by X-ray diffractometer and scanning electron microscopy. The results showed that the YSZ coating bonded closely with the substrate after sintering at 1200 oC, and the porosity of the YSZ coating increased after sintering
The role of cerebrospinal fluid levels of neutrophil gelatinase-associated lipocalin (NGAL) and electroencephalography in the assessment of impaired consciousness in the context of infection
Authors: Platanaki Christina , Paraskevas Themistoklis , Delastic Anna-Lisa , Michailides Christos , Kantanis Anastasios , Polychronopoulos Panagiotis , Marangos Markos , Velissaris Dimitrios
Published: February 2023

Introduction

The sepsis syndrome is potentially affecting several organs and systems irrespectively of the primary source of the infection. Alterations of the brain function in sepsis patients may result either from a primary central nervous system (CNS) infection or could be part of the sepsis-associated encephalopathy (SAE), a common complication of sepsis, characterized by a diffuse dysfunction of the brain due to an infection elsewhere in the body without overt CNS infection. Aim of the study was to evaluate the usefulness of electroencephalography and the biomarker neutrophil gelatinase-associated lipocalin (NGAL) when measured in the cerebrospinal fluid (CSF) in the management of these patients.

Methods

Patients presenting at the emergency department with altered mental status and signs of infection were included in this study. Among initial assessment and treatment of the patients based on the international guidelines for treating sepsis, NGAL was measured in the cerebrospinal fluid (CSF) using ELISA technique. Electroencephalography was performed when possible within 24 hours after admission and EEG abnormalities were recorded.

Results

32 of 64 patients included in this study were diagnosed with central nervous system (CNS) infection. CSF NGAL was significantly higher in patients with CNS infection compared to patients without CNS infection (18.1 [5.1–71.1] vs 3.6 [1.2–11.6]; p<0.001). There was a trend for higher CSF NGAL in patients with EEG abnormalities, which did not reach statistical significance (p=0.106). CSF NGAL levels were similar between survivors and non-survivors (medians: 7.04 vs 11.79).

Conclusion

In patients presenting at the emergency department with altered mental status and signs of infection, CSF NGAL was significantly higher in patients with CSF infection. Its role in this acute setting should be evaluated further. CSF NGAL could be suggestive of EEG abnormalities.
Normal saline versus balanced crystalloids in patients with prerenal acute kidney injury and pre-existing chronic kidney disease
Authors: Papasotiriou Marios , Mpratsiakou Adamantia , Georgopoulou Georgia , Ntrinias Theodoros , Balta Lamprini , Pavlakou Paraskevi , Goumenos Dimitrios S. , Papachristou Evangelos
Published: February 2023

Introduction

Normal saline (N/S) and Ringer’s-Lactate (L/R), are administered in everyday clinical practice. Despite that, N/S increases the risk of sodium overload and hyperchloremic metabolic acidosis. In contrast, L/R has lower sodium content, significantly less chloride and contains lactates. In this study we compare the efficacy of L/R versus N/S administration in patients with prerenal acute kidney injury (AKI) and pre-established chronic kidney disease (CKD).

Methods

In this prospective open-label study we included patients with prerenal AKI and previously known CKD stage III-V without need for dialysis. Patients with other forms of AKI, hypervolemia or hyperkalemia were excluded. Patients received either N/S or L/R intravenously at a dose of 20 ml/kg body-weight/day. We studied kidney function at discharge and at 30 days, duration of hospitalization, acid-base balance and the need for dialysis.

Results

We studied 38 patients and 20 were treated with N/S. Kidney function improvement during hospitalization and at 30 days after discharge, was similar between the two groups. Duration of hospitalization was also similar. Anion-gap improvement as expressed with Δanion-gap between discharge and admission day was higher in those patients that received L/R in comparison to those that received N/S and pH increase (ΔpH) was slightly higher in the L/R group. No patient required dialysis.

Conclusions

Administration of L/R or N/S to patients with prerenal AKI and pre-established CKD had no significant difference in short or long term kidney function but L/R showed a better profile in acid-base balance improvement and Cl− overload in comparison to N/S.