bluuebunny/crossref_metadata_2025 huggingface dataset:
MENTAL ACCOUNTING AND LOSS AVERSION ON INDONESIA FIRM’S PERFORMANCE DURING COVID-19
Authors: Turangan Grace , Suk Kim Sung
Published: September 2023

Dunia dikejutkan dengan ditemukannya virus baru COVID-19 yang berdampak pada kinerja perusahaan. Tujuan dari penelitian ini adalah untuk menguji pengaruh mental accounting behavior dan loss aversion terhadap kinerja perusahaan di Indonesia yang terdaftar di KOMPAS100 selama periode pandemi COVID-19. Model regresi Ordinary Least Square (OLS) pada data panel dibentuk dengan menggunakan dua variabel dependen ROA dan Tobin's Q. Hasil penelitian menunjukkan bahwa perilaku loss aversion berpengaruh negatif terhadap kinerja perusahaan, baik pada variabel ROA maupun variabel Tobin's Q dan perilaku tersebut umumnya memiliki dampak yang semakin meningkat ketika krisis akibat pandemi COVID-19 terjadi. Sementara perilaku mental accounting juga terbukti memberikan dampak negatif terhadap kinerja perusahaan dengan menggunakan variabel ROA selama masa pandemi COVID-19, namun perilaku ini meningkat signifikan sehingga berdampak negatif terhadap kinerja perusahaan. Namun hasil tersebut tidak sejalan dengan penelitian menggunakan Tobin's Q yang menunjukkan hasil yang signifikan bahwa perilaku mental accounting memberikan dampak positif terhadap kinerja perusahaan dan dampak tersebut meningkat saat masa krisis akibat pandemi COVID-19. Hasil penelitian menyimpulkan penelitian sebelumnya menunjukkan bahwa baik mental accounting maupun loss aversion berpengaruh terhadap kinerja perusahaan.
Biochemical and morphological substantiation of the connective tissue hypothesis of mandibular third molar eruption
Authors: Korshunov AS , Vagner VD , Belskaya LV , Kuryatnikov KN , Serov DO , Krasnov VA , Tigranyan GO , Bondar IA
Published: September 2023

Studying the mechanism underlying tooth eruption is an important and promising area due to the increased incidence of the diseases associated with tooth eruption abnormalities or difficulties that can result in purulent and septic complications. The study was aimed to explore variability and structural features of the hard tissue mineral component and organic matrix in mandibular third molars being at different stages of tooth eruption. Microscopic examination and biochemical testing of the enamel, dentin, and dentin–enamel junction of the study participants’ (n = 67; females aged 14–36) mandibular third molars were performed by scanning electron microscopy and Fourier transform infrared (FT-IR) spectroscopy. The association of the tooth eruption stage with the hard tissue structural features, such as the degree of mineralization and the size of dentinal tubules, orientation and size of the enamel prisms, was revealed. There were significant differences in the mandibular third molar hard tissue water content, which was demonstrated by metabolic processes and maturation rate (p < 0.05). According to the IR spectroscopy data, intensity of the collagen absorption bands in the enamel increases with age, while in dentin it decreases (1202, 1249, and 1342 cm–1). Furthermore the combination of the reduced intensity of the 1202 cm–1 band with the increase in the 1342 cm–1 dentin–enamel junction band confirms the important role it plays as a link between the enamel and dentin due to its metabolic, shock-absorbing, protective, and nutritional functions. The findings demonstrate significant changes in the wrapping and orientation of the collagen fibrils and fibers in the hard tissue, which affect primary spatial orientation and mandibular dental topography.
Klinicheskoe znachenie opredeleniya citokinov u pacientov s rasseyannym sklerozom i vzaimosvyaz' s gerpeticheskoj infekciej
Authors: Баранова Н. С. , Грись М. С. , Баранов А. А. , Спирин Н. Н. , Артюхов А. С. , Шакирова К. М. , Насонов Е. Л.
Published: September 2023

V vozniknovenii i razvitii obostrenij rasseyannogo skleroza (RS) uchastvuyut persistiruyushchie infekcii: virusy Epshtejna–Barr, gerpesa 6-go tipa, prostogo gerpesa 1-go i 2-go tipov, varicella-zoster-virus. Vyrabotka citokinov imeet klyuchevoe znachenie v ogranichenii rasprostraneniya gerpeticheskoj infekcii v organizme cheloveka, a disbalans ih produkcii yavlyaetsya faktorom progressirovaniya RS. Cel'yu issledovaniya bylo opredelit' uroven' citokinov v syvorotke krovi u pacientov RS, ocenit' ih klinicheskoe znachenie i vzaimosvyaz' s reaktivaciej gerpeticheskoj infekcii. Obsledovano 36 pacientov (12 muzhchin i 24 zhenshchiny), s dostovernym RS (kriterii McDonald) i remitiruyushchim techeniem. U 18 chelovek vyyavlena reaktivaciya perifericheskoj gerpes-virusnoj infekcii. Syvorotochnyj uroven' 15 citokinov: IL1β, IL4, IL6, FNO-a, INF-γ, IL10, IL17A, IL17F, IL21, IL22, IL23, IL25, IL31, IL33, sCD40L issledovali s pomoshch'yu mul'tipleksnoj tekhnologii hMAR. Pri RS, v sravnenii s kontrolem, vyyavleno uvelichenie IL10, IL33 (p < 0,001). Naibolee chasto vyyavlyali vysokie znacheniya IL33 — u 20 (52,8%) pacientov. Pri obostrenii zabolevaniya srednij uroven' IL10 byl vyshe (p < 0,01), dostoverno chashche vstrechalis' vysokie znacheniya IL31 (sootvetstvenno 42,8 i 6,9%; p = 0,04) i prevalirovalo sochetannoe povyshenie IL33 s drugimi citokinami (IL17A, IL17F, IL21, IL31) (sootvetstvenno v 57,1 i 6,9% sluchaev; p = 0,008). Pri reaktivacii gerpes-virusnoj infekcii uroven' IL1β, IL23 i IL33 byl vyshe, chem bez nee (p < 0,05 i p < 0,01 sootvetstvenno). Vysokie znacheniya IL33 znachimo chashche registrirovali v etoj gruppe pacientov (77,7 i 33,3%; p = 0,008). Obsuzhdaetsya uchastie IL10, IL31, IL33 i drugih citokinov v patogeneze associirovannogo s virusami gerpesa RS.
Ocenka metastaticheskih harakteristik kletok s gibridnym fenotipom pri rake molochnoj zhelezy
Authors: Мухамеджанов Р. Х. , Григорьева Е. С. , Таширева Л. А. , Перельмутер В. М. , Завьялова М. В. , Савельева О. Е.
Published: September 2023

Izucheniyu cirkuliruyushchih opuholevyh kletok (COK) v poslednee vremya udelyayut bol'shoe vnimanie, blagodarya ih vedushchej roli v formirovanii otdalennyh metastazov. V to zhe vremya malo dannyh o svojstvah cirkuliruyushchih kletok s odnovremennoj ekspressiej lejkocitarnyh i epitelial'nyh markerov i ih vozmozhnoj roli v opuholevoj progressii i rezistentnosti k himioterapii. Cel'yu issledovaniya bylo izuchit' subpopulyacii kletok s gibridnym epitelial'no-lejkocitarnym fenotipom, a takzhe ocenit' priznaki stvolovosti, epitelial'no-mezenhimal'nyj perekhod (EMP) i integrinovyj interfejs, obuslovlivayushchie ih vozmozhnye metastaticheskie svojstva pri rake molochnoj zhelezy (RMZH). V rabotu vklyucheny dannye issledovaniya 128 bol'nyh invazivnoj karcinomoj nespecificheskogo tipa molochnoj zhelezy. Dlya ocenki populyacionnogo sostava i metastaticheskogo potenciala cirkuliruyushchih v krovi kletok i kletok pervichnoj opuholi s gibridnym fenotipom ispol'zovali metod mnogocvetnoj protochnoj citometrii. Suspenziyu kletok pervichnoj opuholi gotovili metodom mekhanicheskoj dezagregacii. V populyacii kletok s gibridnym fenotipom otmechena vysokaya stepen' geterogennosti, vklyuchaya kombinaciyu priznakov stvolovosti, EMP i raznoobraznyj integrinovyj interfejs. Kletki s gibridnym fenotipom prinimayut uchastie v mekhanizmah limfogennogo i gematogennogo metastazirovaniya. Pri limfogennom metastazirovanii metastaticheskij potencial etih kletok associirovan s priznakami stvolovosti (r = 0,0422) i koekspressiej β3-, β4- i αVβ5-integrinov (r = 0,0338). Pri gematogennom metastazirovanii metastaticheskij potencial gibridnyh kletok associirovan s priznakami stvolovosti (r = 0,015) i ne svyazan s priznakami EMP i ekspressiej integrinov.
Biohimicheskoe i morfologicheskoe obosnovanie soedinitel'notkannoj gipotezy prorezyvaniya nizhnih tret'ih molyarov
Authors: Коршунов А. С. , Вагнер В. Д. , Бельская Л. В. , Курятников К. Н. , Серов Д. О. , Краснов В. А. , Тигранян Г. О. , Бондарь И. А.
Published: September 2023

Izuchenie mekhanizma prorezyvaniya zubov yavlyaetsya vazhnym i perspektivnym napravleniem vvidu uvelicheniya chastoty sluchaev vozniknoveniya boleznej, svyazannyh s narusheniem ili zatrudnennym prorezyvaniem, kotorye mogut privodit' k gnojno-septicheskim oslozhneniyam. Cel'yu issledovaniya bylo izuchit' variabel'nost' i strukturnye osobennosti mineral'nogo komponenta i organicheskogo matriksa v tverdyh tkanyah nizhnih tret'ih molyarov, nahodyashchihsya na raznyh stadiyah prorezyvaniya. U uchastnikov issledovaniya (n = 67; zhenshchiny, vozrast ot 14 do 36 let) provodili mikroskopicheskoe i biohimicheskoe issledovanie emali, dentina i emalevo-dentinnogo soedineniya nizhnih tret'ih molyarov metodami rastrovoj elektronnoj mikroskopii i IK-Fur'e-spektroskopii. Prodemonstrirovana svyaz' stadii prorezyvaniya so strukturnymi osobennostyami tverdyh tkanej: urovnem mineralizacii i razmerami dentinnyh kanal'cev, orientaciej i razmerami emalevyh prizm. Soderzhanie vody v tverdyh tkanyah nizhnih tret'ih molyarov znachimo razlichaetsya, chto harakterizuyut obmennye processy i skorost' sozrevaniya (p < 0,05). Po dannym IK-spektroskopii intensivnost' polos pogloshcheniya kollagena s vozrastom v emali uvelichivaetsya, a v dentine umen'shaetsya (1202, 1249 i 1342 sm–1), pri etom sochetanie snizheniya intensivnosti polosy 1202 sm–1 s uvelicheniem polosy 1342 sm–1 u emalevo-dentinnogo soedineniya podtverzhdaet ego vazhnuyu rol' svyazuyushchego zvena mezhdu emal'yu i dentinom za schet obmennoj, amortiziruyushchej, zashchitnoj, pitatel'noj funkcij. Poluchennye dannye ukazyvayut na znachitel'nye izmeneniya upakovki i orientacii kollagenovyh fibrill i volokon v tverdyh tkanyah, chto vliyaet na pervichnuyu prostranstvennuyu orientaciyu i topograficheskoe raspolozhenie zubov v nizhnej chelyusti.
Crystal guava (Psidium guajava L. “Crystal”) treated with gibberelic acid (GA3) : Evaluation of in vitro antioxidant capacities
Authors: Sumi Lestari Fajar , Pemimpin Hutagaol Ricson , Srikandi Srikandi
Published: September 2023

Free radicals can cause many diseases, such as cancer. Antioxidant is a compound that could scavenge free radicals. One of the natural source antioxidants is guava. The application of gibberellic acid (GA3) is known to affect the physicochemical properties and antioxidant content of the fruit. The goals of this research were to investigate the antioxidant activity of skin, flesh and fruit of crystal guava were given additional GA3 treatment with concentration 0; 60; 120; 180; 240; and 300 ppm by determining the value of the Antioxidant Activity Index (AAI) using DPPH; evaluate the total phenolic content (TPC), ferric reducing antioxidant power (FRAP) and physicochemical properties; analyse the correlation between the TPC with AAI DPPH by Pearson’s method. Extraction was performed by the maceration method using acetone 50% mixed with a magnetic stirrer for 1 h. Determination of AAI DPPH, FRAP and the TPC was performed by UV-Visible spectrophotometry. TPC in the flesh and fruit fractions tended to increase and FRAP values in all fractions decreased with GA3 application. The highest TPC and FRAP was given by the G3 treatment on the skin fraction and G0 treatment on the skin fraction. The highest AAI in all fractions was given by the G3 treatment. The TPC was significantly positively correlated with the AAI DPPH of the flesh and fruit fraction extracts (0.250 ≤ r ≤ 0.880), and the skin fraction extracts showed a strong negative correlation between TPC and AAI DPPH (-0.813 < r < -0.973).
Based E-LKPD development based problem based learning to improve students' creative thinking skills on acid-base material
Authors: Mariyana Mariyana , Syahri Wilda , Haryanto Haryanto
Published: September 2023

Students' creative thinking skills tend to be lowas found in SMAN 2 Muaro Jambi. Hal this is due to students' low learning interest in chemistry subjects. Therefore the teacher must be able to create creative learning such as developing a teaching media. This study aims to develop media-based E-LKPD Problem Based Learning to be able to improve students' creative thinking skills on acid-base material. The type of development research carried out is Research and Development using a combination approach, namely between qualitative and quantitative approaches. The qualitative approach is intended to analyze the development process which will be described in depth about the events that occurred during the research, while the quantitative approach is used to analyze the results and path analysis. Electronic student worksheets (E-LKPD) which were developed based on problem-based learning models using Page flip Professional 3D software using a 4-D model development design. In this development research, the last stage is to test the effectiveness of the product using type experimental research design equivalent time serises design so it uses one experimental class by measuring the value posttest each meeting 3 times using the E-LKPD media that has been developed in the format pfprj. Based on the results of the study that there are differences in learning out comes without using the media and when using the media, that is obtained a difference of 11.56. Every meeting there is an increase of 5 - 7 average score so that the media developed is effective for improving students' creative thinking skills.
Rural tourism service design based on collaborative filtering algorithm after epidemic normalization
Authors: Li Xu
Published: September 2023

In the epidemic, normalized tertiary and rural tourism service industries are in the economic depression stage. Under the epidemic, combined with big data technology to improve the economic income and development scale of rural tourism services become the current development trend of the tourism industry. This paper first proposes a collaborative filtering recommendation algorithm based on big data technology to study the design of rural tourism services under the new epidemic normalization. Then the basic principle of the content-based recommendation algorithm is to obtain the interests of tourists based on their historical behaviors and recommend rural tourism similar to their interest preferences, and choosing the appropriate similarity function can improve the accuracy of the neighborhood-based CF method. Finally, to meet the tourists’ demand for a full range of tourism experience services and build a rural tourism service system, the psychological demand of rural tourism tourists’ consumption is analyzed based on a collaborative recommendation algorithm. The results show that among the main factors attracting tourists, 75.54% are natural scenery, 54.68% are folk culture, 51.08% are unique flavors and food, 43.17 are experiencing rural life, and 41.73% are promoting relationships with friends. This study plays an important role in accelerating rural revitalization by attracting urban tourists back to the countryside and driving the transfer of consumer groups and the rural economy to increase income; thus, rural tourism plays an important role in accelerating rural revitalization.
Application of nonlinear regression theory based on edge computing to mathematical modeling in universities
Authors: Lu Fangfang , Tao Shuang , Wan Wenting
Published: September 2023

Mathematical modeling is the link between mathematics and practical problems and is the medium through which mathematics is widely used in related fields. This paper introduces the definitions of mathematical models in different disciplines and for different practical problems and gives the specific steps of mathematical modeling and the key problems to be solved in each step, the most important of which is nonlinear regression theory. The parameter estimation of the error variance of the nonlinear regression model is performed by the least squares method, and for the problem of poor numerical stability and computational complexity due to the pathological matrix in solving the least squares method, the least squares method is proposed based on adding the edge computing framework. The results show that the system efficiency of the nonlinear regression model based on edge computing is 92%, and the resource utilization is between 80% and 90% on average, which is higher than the two algorithms of RPP and RPA. The nonlinear regression model based on edge computing proposed in this paper organically combines mathematical modeling, which can make mathematical modeling play a greater role in the practical application process and solve more practical problems.
The cultivation system of cross-media narrative ability of scriptwriter talent based on cluster model
Authors: Yu Xiaonan
Published: September 2023

The arrival of the era of big data and integrated media has changed the way of media communication and broken the original single media narrative model. The interaction and communication between traditional media and emerging media have formed a new paradigm of narrative, i.e., cross-media narrative. Based on the purpose of studying the cross-media narrative ability cultivation system of screenwriting art talents, this paper analyzes the market growth of cross-media narrative works in the era of integrated media and the audience’s perceptions of cross-media narrative works such as IP adaptations using the K-means clustering method. From 2018 to 2021, the market share of cross-media narrative works grew from 21.1% to 35.3%, while traditional single-media narrative works declined by 34.76%. Faced with the surge of transmedia narrative works, 29.5% of viewers think the stories are unattractive, too homogeneous, and lack freshness. Another 24.6% of viewers think that the plot lacks originality and only copies novels. Another 33.2% of viewers think there is plagiarism and piracy. The current cross-media narrative works still have many problems, such as rough production and a lack of polished plots. The education of film and television scriptwriting should focus on the cultivation of cross-media narrative quality, the enhancement of cross-media narrative ability, and the training of cross-media narrative skills for scriptwriting talents to cultivate high-level applied scriptwriting talents who can connect with the industry.
The construction of a localized teaching model of the Orff music teaching method based on big data analysis
Authors: Qin Ting
Published: September 2023

In the era of the big information wave and rapid development of economic globalization, the traditional music teaching mode in China has failed to completely develop the times. Here focuses on constructing a localized teaching mode of the Orff music teaching method in the case of cloud information analysis, firstly, understanding the definition of cloud information, using the MOOC platform design and offline traditional Orff music teaching method to build the localized teaching mode. The system is designed with SSH structure as the framework and BP-related calculation methods, with basic theory as the key point adopted by related calculation method, implementation process adopted for break-in effect inspiring rules for evaluating the actual use, analyzing the accuracy and stability of the three algorithms through experiments of three cases, and the final from experimental analysis accuracy of BP neural network algorithm is between 77% and 86%, which is higher than the accuracy and stability of the other two algorithms. Furthermore, stability is high, thus building a set of localized and innovative teaching models suitable for Chinese music education, which is conducive to improving students’ aesthetic and artistic level and bringing Chinese music to the world stage.
Vocabulary Change in Process Writing: Effect of Text Structure Instruction
Authors: Oshima Sachi
Published: September 2023

The purpose of this study, conducted as a follow-up study of Oshima (2020), was to examine whether Japanese EFL students’ use of vocabulary changed after being given lessons on explicit instruction on text structure and process writing. Two groups of college students—the beginner-level group writing a descriptive essay and the advanced-level group writing an argumentative essay—wrote an outline, the first draft (D1), the second draft (D2), and the final draft (FD), and I examined the differences in lexical richness between students’ D1 and FD with New Word Level Checker (Mizumoto, 2021). The results showed that both groups’ drafts had changed in the number of words used (tokens), the number of unique words used (types), and the number of lower frequency words used. This study’s finding also supports the importance of choosing an appropriate measurement to analyze students’ vocabulary levels. For Japanese students, 1K-word bands, which have been widely used in previous literature, seem too broad to capture their small vocabulary improvement.
Diamonds from V. Grib kimberlite pipe: Morphology and spectroscopic features
Authors: Vasilev E. A. , Ustinov V. N. , Leshukov S. I. , Pendeliak R. N. , Nikolaeva E. V.
Published: September 2023

Research subject. The article presents the results of studying 500 diamond crystals from the core of exploration boreholes of crater and diatreme facies of the upper part of V. Grib kimberlite pipe. Crystals from tuffs and tuffites (crater), tufobreccia, autolith kimberlite breccia and porphyry kimberlite (diatreme) were analyzed separately. aim. To carry out a morphological and spectroscopic study of diamonds from V. Grib pipe. Materials and Methods. An VERTEX-70 spectrometer with a Hyperion 1000 microscope was used to determine the total nitrogen concentration and the share of nitrogen in the form of B defects (NBS), the absorption coefficients of the “platelet” bands B', 3107 cm-1. Images of photoluminescence (PL) were recorded at 360 nm excitation by an ALROSA VIEW PRO device, in order to detect inhomogeneities and color of PL. The PL spectra were recorded by a Horiba FL-3 spectrometer with an excitation of 350 and 450 nm at 300 K and by an InVia Renishaw spectrometer with an excitation of 405, 488 and 787 nm at 77 K. Results. The distribution of diamonds in terms of nitrogen concentration and NBS is specific; about 50% of the crystals are located along one isotherm, the proportion of low-nitrogen crystals is 5%. The PL spectra of 25% of crystals showed the lines of 883/885 nm of an elementary Ni-containing defect. Most crystals with this defect have less than 400 ppm of nitrogen, but they occupy the entire range according to NBS. This system is found in the spectra of 76% of twins and intergrowth; the latter are of 36% of diamonds with the lines 883/885 nm. The studied diamonds differ from those found in M.V. Lomonosov deposit in terms of a much lower content of crystals of cubic habitus (2 and 15%), a lower degree of dissolution (octahedra, respectively, 33 and 15%), a low proportion of colored stones, as well as a wide range of nitrogen concentration and NBS. Conclusion. The revealed features indicate the specific growth conditions of diamonds from V. Grib deposit, which differed from those of diamonds from other kimberlitic bodies of the East European, Siberian platforms and the Urals. The high proportion of low-nitrogen crystals and Ni-containing diamonds is a possible indicator for the presence of large CLIPPIR-type crystals.
Minerals of the apatite group from ultramafic lamprophyres of the Zima alkaline-ultramafic carbonate complex (Urik-Iya graben, Eastern Sayan region)
Authors: Nugumanova Ya. N. , Kalugina A. D. , Starikova A. E. , Doroshkevich A. G. , Prokopyev I. R.
Published: September 2023

Research subject. This paper presents the results of a study of minerals of the apatite group from aillikites of the Zima alkaline-ultramafic carbonatite complex. Aim. To determine the composition of apatites to characterize the studied rocks and to elucidate the patterns of element distribution in the magma of aillikites in the late crystallization stages. Materials and Methods. Minerals of the apatite group from 6 samples (4 from dikes of the Bol'shetagninsky massif, 1 from the Bushkanai dike, 1 from the Beloziminskaya pipe) were studied. The samples showed similar textural-structural features, differing in the mineral composition of the groundmass. Results. Minerals of the apatite group are widespread in the groundmass of all the studied rocks. They are characterized by idiomorphic, subidiomorphic crystals of homogeneous composition, 10-100 microns in size. Minerals of the apatite group were identified as fluorapatite and hydroxyapatite characterized by a significant SiO2 content (up to 5 wt %), low SrO content (up to 1.5 wt %) and REE2O3 (up to 2 wt %). The studied apatites also include MgO, FeO, Na2O, SO4, and CO3. Fluorapatites from dyke aillikites are characterized by a higher silicon content as compared to apatites from the Beloziminskiy pipe. Apatites from fresh aillikites of the Bushkanai dyke have a relatively higher content of Sr, REE, and F than minerals from serpentinized samples. Conclusions. The composition of the studied apatites has a lower Sr and Ba content than orangeite and lamproite apatites. In terms of Sr, Si and REE contents, the studied apatites are similar to kimberlite and ailikite apatites. Such a difference allows minerals of the apatite group to be used as an indicator mineral for classification of kimberlites and related rocks, but only in combination with petrography and composition of other minerals of the groundmass.
U-Pb (LA-ICP-MS) age of detrital zircons from sandstones of the crater part of the V. Grib kimberlite pipe and KL-01 magmatic object, Arkhangelsk diamondiferous province (north of the East European Platform)
Authors: Agasheva E. V.
Published: September 2023

Research subject. Detrital zircons from sandstones that contain no admixtures of magmatic material, sampled from the crater parts of the highly diamondiferous V. Grib kimberlite pipe and KL-01 magmatic object. Both objects are located in the north of the East European Platform, within the Arkhangelsk diamondiferous province, at a distance of ≈100 km from each other. Aim. To obtain the first data on the composition of the U-Pb isotope system of detrital zircons from sandstones of magmatic objects of the Arkhangelsk diamondiferous province in order to evaluate the ages of their sources and reveal correlations with known tectono-thermal events in the continental crust of the region. Materials and methods. Using the LA-ICP-MS method, data were obtained on the composition of the U-Pb isotopic system of 52 zircon grains from the sandstones of the V. Grib pipe and 143 zircon grains from the KL-01 sandstones. Results. Sources of various ages from Archean to Neoproterozoic were established for the studied zircons. However, the majority zircons have Mesoproterozoic age, namely 63 and 65% of grains from the V. Grib pipe and KL-01 object, respectively. The sandstones of the V. Grib pipe contain a larger amount of Meso- and Neo-Archean zircons (≈15%) and a smaller amount of Paleoproterozoic grains (≈14%) compared to those from the KL-01 object ≈7 and 20%, respectively. The population of zircons with the U-Pb ages of 900-700 Ma is absent in the two objects. The minimum age of zircons from sandstones of the crater of the V. Grib pipe (557 ± ± 9 Ma) and KL-01 object (609 ± 9 Ma) is consistent with that of formation of the Vendian sandstones in the area of the pipes of the Arkhangelsk diamondiferous province. Conclusions. The obtained U-Pb age for the studied detrital zircons generally correlate with the previously identified stages of tectono-thermal events in the continental crust of the northern territories of the East European Platform, with the exception of the Mesoproterozoic period 1.7-1.4 and 1.3-1.0 Ga ago, which corresponds to the predominant part U-Pb age values of the studied zircons.
Devonian diamond reservoir of the Urals
Authors: Paktovskiy Yu. G. , Popov A. G.
Published: September 2023

Research subject. The Takata formation of the Emsian tier of the Lower Devonian (D1tk) in the Urals is a reservoir of Devonian diamonds. Aim. Confirmation and determination of the diamond-bearing conditions of the reservoir. Materials and Methods. Generalization of primary and interpreted geological information. Lithofacial analysis. Historical and geological reconstruction. Cartographic analysis and geological and cartographic modeling in the ArcMapESRY GIS environment using the ModelBuilder module. Results. The Takata formation is part of the Emsian tier of the Lower Devonian. Tectonically, the Takata formation is located in the West Ural Folded Zone. The diamond content in the Urals is spatially related to the outputs of the Takata formation. The industrial diamond-bearing capacity and the highest density of diamond placers are located in the Vishersky, Chykmansky and Chusovskoy diamond-bearing regions of the Northern and Middle Urals within the Perm Krai. In the early Devonian, the Takata Sea existed in the Vishera diamond-bearing area; a large river with a delta flowed in the direction from northwest to southeast. The sediments of the formation comprise the facies cycle: flood-plain - channel alluvium - delta sediments - underwater-delta - marine sediments. Diamonds are concentrated in the thickness of coarse-grained alluvium, small-pebble basal conglomerates that formed on the land-sea boundary of the paleocontinent of the Russian Plate. Three facies types of the Takata formation section are distinguished: continental, coastal-marine and marine. Its diamond-bearing capacity is associated with the continental and coastal-marine sediments of the formation within the Perm Region. To the north and south of the diamond-bearing areas of the Perm Krai, the Takata formation is represented by marine sediments. According to the geodynamic model based on the geological section of the Northern Urals, the alluvial and coastal-marine Takata diamond placers were formed in the early Devonian as a result of the demolition of material from the Russian Plate. The sources of destruction were rocks of the Precambrian, Ordovician and Silurian. The main spatial-geomorphological criterion for searching for diamond-bearing conglomerates of the Takata formation is the maximum distance of demolition from these conglomerations to placers, equal to 500 m.
Features of Nitration of Aromatic Aldehydes with the Difluoromethoxy Group
Authors: Petko Kirill I. , Filatov Andrey A. , Sokolenko Taras M.
Published: September 2023

Nitration of aromatic aldehydes with difluoromethoxy group results in the partial ipso-substitution of the aldehyde group if difluoromethoxy group is located in the para-position to the aldehyde group. The presence of a chlorine atom in the meta-position to the aldehyde group increases the contribution of the ipso-substitution, while the presence of a chlorine atom in the ortho-position to the aldehyde group reduces it. The presence of strong donors (alkoxy groups) in the molecule eliminates the contribution of the ipso-substitution.
Identifikasi Bahaya dan Penilaian Risiko Pekerja Industri Mebel Kota Payakumbuh
Authors: Fitriyani Fitriyani , Putri Novia Wirna , Fathul Teta Try , Fiqran Wafiq Ainul , Angela Michelle
Published: September 2023

Usaha mebel dan furniture merupakan salah satu industri informal/ rumah tangga yang dimiliki perorangan/ non pemerintah yang banyak dijumpai diberbagai daerah. Aktifitas pekerja di industri ini memiliki berbagai bahaya dan risiko dalam setiap proses kerjanya. Masalah K3 yang sering muncul adalah gangguan sistem pernafasan akibat pekerjaan mengamplas dan mengecat yang menghasilkan debu kayu, terhirup uap dari bahan pelarut organik, dan partikulat kimia berbahaya. Selanjutnya juga terdapat risiko gangguan pada musculoskeletal akibat pekerjaan manual handling yang cukup berat, seperti pemindahan furniture dari tempat penyimpanan ke area kerja. Tujuan penelitian ini untuk menganalisis risiko keselamatan dan kesehatan kerja pada pekerja industri mebel kayu mulai dari proses awal hingga penjualan. Penelitian ini dilakukan di salah satu industri Perabot & Furnitur di Payakumbuh dimulai dari bulan April - Oktober 2022 dengan menggunakan metode semi kualitatif dengan desain analitik observatif. Data diperoleh dari mempertimbangkan karakteristik pekerja serta bahaya dan risiko yang diterima pekerja, maka sample dalam penelitian ini adalah 20 pekerja yang berasal dari kedua pabrik dan mewakili setiap tahapan pekerjaan. Hasil penelitian mendapatkan bahwa terdapat 2 proses kerja dengan potensi risiko level ekstrim,  4 proses kerja dengan potensi risiko level tinggi,  5 proses kerja dengan potensi risiko level sedang, serta 4 proses kerja dengan potensi risiko level rendah
Perencanaan Emergency Response Plan (ERP) dan Penentuan Alat Pemadam Api Ringan (APAR) Pada Gedung Office PT. Putra Perkasa Abadi
Authors: Busra Fachruzzaki , Apgani M. Jamalludin Al , Lestari Rina
Published: September 2023

Sistem Manajemen Keselamatan dan Kesehatan Kerja merupakan hal yang seharusnya diaplikasikan di lingkungan tempat bekerja. Penelitian ini bertujuan untuk memberikan perencanaan Emergency Response Plan dan menentukan Alat Pemadam Api Ringan pada Gedung office PT Putra Perkasa Abadi. Metode penelitian yang digunakan adalah metode kuantitatif–deskriptif. Kegiatan diawali dengan pencarian data mengenai dimensi bangunan, fungsi setiap ruangan serta identifikasi fire hazard. Selanjutnya ditentukan letak pemasangan APAR yang optimal dan mampu menjangkau seluruh bangunan digunakan metode set covering. Pada perencanaan jalur evakuasi, direncanakan bahwa pada setiap lantai minimal terdapat dua pilihan rute yang dapat ditempuh. Beberapa alternatif solusi yang disarankan adalah memindahkan atau menambahkan lokasi Meeting Point ke depan warehouse dan adanya pemasangan Sprinkler dan Smoke Detector pada gedung. Ada dua jenis APAR yang digunakan yaitu APAR jenis CO2 dan Multi-purpose powder. Total penggunaan APAR adalah 1 unit untuk CO2 and 7 unit untuk Multi-Purpose Powder. Berdasarkan fakta di lapangan untuk mengetahui jalur komunikasi saat terjadi kebakaran, maka setiap ruangan dilengkapi dengan papan informasi emergency yang berisi: Channel Radio Emergency, dan Nomor Handphone Emergency. Prosedur yang diterapkan yaitu SOP Pengelolaan Keadaan Darurat dan SOP Penanganan Kebakaran lalu memberikan sosialisasi ke seluruh karyawan terkait SOP ini.
Status Badan Hukum Perseroan Perorangan Ditinjau dari Hukum Perusahaan Indonesia
Authors: Yonanda Rizky , Zahara Zahara , Hijriya Shafira
Published: September 2023

Limited Liability Company (LLC) is a legal entity that was born based on an agreement, this has been in effect since the KUHD era to Law Number 40 of 2007 concerning LLC. This concept then underwent a change after the enactment of Law Number 11 of 2020 concerning Cipta Kerja which introduced a new model of LLC, namely an Single Member Limited Liability Company (SMLLC) which is intended for businesses that meet the criteria as Micro and Small Enterprises (UMK). This is contradictory to the principle of a legal entity which requires the legal entity to be a place where people gather to achieve collective goals; and contrary to the prevailing doctrines in legal entities so far. Based on this, this study aims to discuss the legal status of SMLLC and the consequences for the separate entity doctrine by using a normative-juridical research typology. The legal status of an individual company has fulfilled the formal requirements as a legal entity, namely the existence of approval by the state. However, materially SMLLC does not automatically fulfill the four other legal entity requirements, namely the existence of assets entity separation, a specific purpose, self-interest, and organ structure, so that an SMLLC doesn’t meet the requirements as a legal entity. Then,  the personality of the founder also cannot be separated from the personality of the legal entity. This is linear with the increasingly dominant role of the piercing the corporate veil doctrine, and reducing the role of the separate entity doctrine itself
Akibat Hukum Terhadap Pembatalan Janji Melangsungkan Perkawinan Dalam Sistem Hukum Perdata
Authors: Husna Inayatul , Ulfanora Ulfanora , Syam Misnar
Published: September 2023

Marriage is an inner birth bond between a woman and a man as contained in Article 1 of Law on Marriage. A marriage must be based on the agreement of both parties who will carry out the marriage without any coercion from any party. This is in line with the legal requirements of a marriage according to Article 1320 of the Civil Code. The form of agreement between the two parties can be referred to as a marriage promise or promise to carry out marriage, where the woman and man both agree to hold the marriage. The Marriage Law only regulates the terms and consequences arising from marriage, but there is no law that regulates the promise to hold a marriage. In case No. 146/PDT/2015/PT MKS, the Plaintiff and the Defendant had both agreed to hold the marriage, but the Defendant unilaterally postponed the agreed marriage. This has clearly caused both material and immaterial losses to the Plaintiff. The aggrieved Plaintiff then decided to file a lawsuit in court. Both the judges at the first instance and at the appellate level agreed that the marriage pledge case was an act of default. This is very different from Jurisprudence No. 3191 K / PDT / 1984 which states that non-fulfillment of marriage promises is an act against the law. In its concept, default and unlawful acts are two different things, but not infrequently when applied to a problem there is doubt in classifying it.
The alternative of artistic stylization in the poetic sketches of Venedikt Yerofeev
Authors: Bezrukov Andrey Nikolaevich
Published: September 2023

The subject of research in this article is artistic stylization, which is methodologically considered within the limits of receptive aesthetics and comparative studies. This principle of literary labeling is analyzed on the material of lyrical experiments by Venedikt Yerofeev. The "Anthology of the Poets of REMSTROYTREST", which becomes the illustrative base of the study, has not been subjected to such an assessment in the mass of critical sources. The article provides a comparative analysis of Venedikt Yerofeev's poetic sketches with classical texts of literature of the XIX - XX centuries. The relevance of this work lies in the direct explanation of the formation of a special manner of writing and poetics of the texts of Venedikt Yerofeev. It is productive to use the material for further verification of semantic constants of the works of the specified author. The scientific novelty of the article is determined by the fact that for the first time in it the "Anthology of Poets of REMSTROYTREST" is considered within the boundaries of the alternative of artistic stylization. The literary experiment implemented in the "Anthology ..." is carried out at all major levels of the artistic whole: it is language, genre, form, style, manner, semantic integrity. Embodying the author's idea, Venedikt Yerofeev separates himself from the literal personal "I". It's as if he doesn't want to speak in his own voice, it's better and better to pronounce the evaluation version, according to Yerofeev, with other people's voices, adopting a certain speech mask. This form implements the fractal of double coding, the dynamics of aesthetic play, manipulation of the reader's consciousness. Artistic stylization also implements the attitude of imitation and partial recognition of the pretexts. Semantic limits are not distorted in the course of such variation, within the framework of postmodern poetics they reach the status of rhizome.
System Identification of Unmanned Air Systems at Texas A&M University
Authors: Leshikar Christopher , Valasek John , McQuinn Cassie-Kay
Published: September 2023

This paper presents a summary of system identification flight testing and results for a variety of large and small fixed-wing and multirotor unmanned air systems at Texas A&M University from 1999 to 2023. The six different types of vehicles range from a large powered parafoil, to a fixed-wing vehicle with synthetic jet-actuated roll control effectors, to a radially asymmetric multirotor, to large and small fixed-wing vehicles, and to a Steppe eagle. The observer/Kalman filter identification algorithm is used to generate linear time-invariant state-space models, and the results for both near-real-time online model generation and postflight offline model generation are presented. The use and efficacy of a variety of test input types and their sensitivity to exogenous inputs such as turbulence, in addition to identified model evaluation and selection criteria, are discussed. Several generations of low size, weight, power, and cost flight-test instrumentation including the Developmental Flight-Test Instrumentation data acquisition package are also presented. Challenges that arose from the flight-testing campaigns along with solutions are highlighted in the paper.
Vision-Based Virtual Simulation Platform for Planetary Rovers
Authors: Yang Li , Han Chunxiu , Liu Chuankai , He Ximing
Published: September 2023

In order to evaluate the feasibility of planetary exploration missions, it is imperative to construct planetary terrain environments on the ground. Nevertheless, the implementation of this method is characterized by time-consuming and challenging factors. By contrast, resorting to simulation approaches represents a cost-effective and high-efficiency alternative, which can facilitate the simulation validation of planetary rover exploration missions in an effective manner. In this paper, a modular planet rover simulation platform is proposed; by building and overlaying multiple feature layers corresponding to the surface of the planet, we realize the simulation of high-resolution fine terrain and through adjusting the terrain parameters to meet the needs of different simulated terrain. The experimental results show that we have built a scene to satisfy the requirements of visual effects and physically realistic characteristics of simulation. Using an improved PatchMatch stereomethod to recover images captured real time by a planetary rover navigation camera in a virtual environment provided more complete three-dimensional terrain data for subsequent simulation validation of local path planning. Finally, a simulation environment that combines high-fidelity visual effects and kinematic characteristics supports visualizing the simulation platform: we propose a path planning method using global planning combined with local obstacle avoidance, and we obtain the optimal path that satisfies the kinematic constraints.
“Be Spiritual and Employ Technology in your Ministry”: An Experience of Sermons Amid COVID-19 by Bishop Harrison Sakala of Tabernacle of David Assembly of God in Zambia
Authors: Mwale Nelly
Published: September 2023

Pentecostal preachers in Zambia, like Bishop Harrison Sakala of the Tabernacle of David Assembly of God, reoriented their sermons during online worship services in response to the COVID-19 pandemic in its early stages. The article shows that the outbreak of COVID-19 reshaped the sermons and the role of the “men of God” therein. They blended their sermons with an emphasis on embracing science as opposed to being overly spiritual, adhering to prevention and control measures stipulated by the health authorities and the state, and instilling hope in the masses. The article concludes that the sermons not only pointed to the media as sites for communicating shifts within Pentecostal circles on tackling the pandemic but also signified the collaborative role played by Pentecostal preachers in mitigating the pandemic through the media.
Mixed pyogenic and tuberculous spinal epidural abscesses perforating the dura and extending into the subdural space: A case report and review of the literature
Authors: Almotairi Fawaz S. , Alsaleh Alwaleed Abdulrahman , Basalamah Ali A. , Mallat Mohannad M. , Babateen Emad M. , Abdu Ali , Bahabri Saeed O.
Published: September 2023

Background:

Spinal infections are associated with a wide variety of clinical conditions, including osteomyelitis, spondylitis, diskitis, septic facet joints, and abscesses. Based on its anatomical relationship with the dura mater, the abscess can be epidural (extradural) or subdural (intrathecal). Subdural intramedullary abscesses of the lumbar spinal canal are more common than subdural extramedullary abscesses. Here, we present a rare case of a patient with a mixed pyogenic and tuberculous epidural abscess in the lumbar spine, which perforated the dura and extended to the subdural space.

Case Description:

A 29-year-old male presented with progressively worsening back pain and lower-limb weakness over a period of 3 months, with an associated inability to walk, intermittent radicular pain primarily on the left side, intermittent incontinence, and a history of low-grade fever and night sweats. The patient had a history of intravenous (IV) drug abuse and reported practicing unprotected sexual intercourse. Furthermore, the patient had recently came into contact with a person diagnosed with tuberculosis (TB). The patient was administered empirical broad-spectrum antibiotics and underwent emergent L4–L5 laminectomy and spinal abscess decompression. IV antibiotics were selected based on culture results, and anti-TB medications were started. Postoperatively, the patient demonstrated a remarkable lower-limb power improvement and radicular pain alleviation.

Conclusion:

Spinal epidural abscess perforation of the dura and extension into the subdural space is extremely rare. Distinguishing between epidural and subdural abscesses radiologically is challenging. Multiple risk factors, such as unprotected sexual contact and IV drug misuse, may be associated with the development of polymicrobial abscesses in the lumbar spine. Careful anticipation, identification, and isolation of the causative micro-organisms can ensure effective antibacterial treatment. Early diagnosis, expeditious surgical decompression, and antibiotic treatment are associated with promising outcomes.
Supraorbital artery: Anatomical variations and neurosurgical applications
Authors: Kareem Zahraa M. , Muthana Ahmed , Hassan Sarah F. , Ahmed Fatimah Oday , Hadi Rania Thamir , Algburi Hagar A. , Atallah Oday , Ismail Mustafa , Hoz Samer S.
Published: September 2023

Background:

The supraorbital artery (SOA) originates from the ophthalmic artery in a superomedial aspect of the orbit, exiting through the supraorbital groove to emerge onto the forehead. The SOA has important neurosurgical considerations regarding different approaches and bypasses. The SOA is poorly described in the standard anatomical textbooks. Therefore, we present this article to describe the anatomical variations of the SOA and their implications on the neurosurgical field.

Methods:

We conducted a literature review in PubMed and Google Scholar databases to review the existing literature describing the SOA anatomy and its neurosurgical applications.

Results:

While reading the available articles and original works regarding SOA, we identified 22 studies that discuss the SOA. We noticed the anatomical variations of the SOA in terms of origin, course, diameter, branches, depth, and distance in relation to the midline and vertical glabellar line. We also discussed certain applications of SOA and its importance in neurosurgical approaches, bypass, photoplethysmography, aneurysms, and reconstruction of cranial fossa defects.

Conclusion:

The variable anatomy of the SOA has a paramount impact on performing different neurosurgical approaches. Therefore, cadaveric studies of the SOA are important to explore potential methods for the preservation of the artery in different neurosurgical applications.