bluuebunny/crossref_metadata_2025 huggingface dataset:
MENINGKATKAN KEMAMPUAN BERHITUNG MELALUI MEDIA PEMBELAJARAN PAPAN JURANG PADA SISWA KELAS II SEKOLAH DASAR
Authors: Hadun Fitra , Anwar Herson , Huljannah Miftha
Published: December 2024

Penelitian ini dilakukan berdasarkan data lapangan dan wawancara kepada guru kelas II SDN 21 Limboto yang menyatakan bahwa masih banyak peserta didik kesulitan dalam mengitung penjumlahan dan pengurangan bersusun. Salah satu faktor penyebab dari masalah ini adalah karena kurangnya penggunaan media pembelajaran dan proses pembelajaran dilakukan secara monoton. Tujuan penelitian ini adalah untuk meningkatkan kemampuan berhitung penjumlahan dan pengurangan bersusun peserta didik melalui penggunaan media pembelajaran papan jurang. Penelitian ini menggunakan metode penelitian tindakan kelas. Subjek penelitian ini sebanyak 19 peserta didik. Instrumen yang digunakan meliputi observasi untuk kegiatan guru dan siswa, soal tes kemampuan berhitung penjumlahan dan pengurangan bersusun, dan wawancara untuk mengetahui respon peserta didik terhadap media pembelajaran yang telah dilaksanakan. Teknik analisis data yang digunakan secara kualitatif. Hasil penelitian menunjukkan bahwa kemampuan berhitung penjumlahan dan pengurangan bersusun peserta didik kelas II SDN 21 Limboto saat pra siklus adalah sangat rendah yakni 0%. Pada siklus 1 terjadi peningkatan kemampuan peserta didik yakni 47,3%. Pada siklus 2 terjadi peningkatan kemampuan yang baik sekali yakni 84,2%. Sehingga dapat disimpulkan bahwa penerapan media pembelajaran papan jurang (penjumlahan dan pengurangan) dapat meningkatkan kemampuan berhitung penjumlahan dan pengurangan bersusun pada peserta  didik kelas II SDN 21 Limboto.
Neovascular glaucoma as a complication of proton therapy for uveal melanoma
Authors:   Saint Petersburg Branch of the S. Fyodorov Eye Microsurgery Federal State Institution, St. Petersburg, Russian Federation, Panova I.E. ,   St. Petersburg State University, St. Petersburg, Russian Federation,   North West State Medical University named after I.I. Mechnikov, St. Petersburg, Russian Federation, Svistunova E.M. ,   Saint Petersburg Branch of the S. Fyodorov Eye Microsurgery Federal State Institution, St. Petersburg, Russian Federation, Vorobyov N.A. ,   St. Petersburg State University, St. Petersburg, Russian Federation,   Medical and Diagnostic Center of the International Institute of Biological Systems named after Berezin Sergei, St. Petersburg, Russian Federation, Samkovich E.V. ,   Saint Petersburg Branch of the S. Fyodorov Eye Microsurgery Federal State Institution, St. Petersburg, Russian Federation, Martynova N.I. ,   Medical and Diagnostic Center of the International Institute of Biological Systems named after Berezin Sergei, St. Petersburg, Russian Federation, Bykhovsky A.A. ,   Saint Petersburg Branch of the S. Fyodorov Eye Microsurgery Federal State Institution, St. Petersburg, Russian Federation
Published: December 2024

Aim: to evaluate possible predictors of neovascular glaucoma (NVG) in patients with uveal melanoma (UM) after pencil-beam scanning proton therapy (PT).
Patients and Methods: 29 UM patients (30 eyes; age: 23–87 years) received a course of hypofractionated PT at a total dose of 49 Gy in 7 fractions (BED 0.6=620 Gy; EQD2=143 Gy). After the therapy, radiation-related complications developed in 26 patients at various times, and in
some cases they affected multiple systems. Ocular hypertension was reported in 13 patients, and NVG developed in 9 of them. NVG predictors
were evaluated in groups of NVG patients (Study Group/SG 1) and non-NVG ones (SG 2) with a ≥6-month follow-up (n=22) after the end of the PT course.
Results: the NVG group demonstrated lower best corrected visual acuity (BCVA) and total visual field loss (along 8 meridians, in degrees) values, as well as pre-treatment Bruch's membrane rupture and more advanced stage of the disease significantly (p<0.05) more often than the non-NVG group.
Conclusion: the study revealed some possible predictors of neovascular glaucoma development that should be considered to select patients for pencil-beam scanning PT in terms of organ preservation UM treatment. Further study of the issue in a larger patient cohort and a longer follow-up
will provide identification of additional risk factors for NVG and generation of a mathematical prediction model of the complication development.
KEYWORDS: choroidal melanoma, proton therapy, uveal melanoma, ocular oncology, neovascular glaucoma, radiation-related complications.
FOR CITATION: Panova I.E., Svistunova E.M., Vorobyov N.A., Samkovich E.V., Martynova N.I., Bykhovsky A.A. Neovascular glaucoma as
a complication of proton therapy for uveal melanoma. Russian Journal of Clinical Ophthalmology. 2024;24(4):185–192 (in Russ.). DOI:
10.32364/2311-7729-2024-24-4-4
Сучасний підручник для початкової школи: проблема візуалізації
Authors: Ліпчевська Інна
Published: December 2024

Складовою реформування освітньої системи в початковій школі є модернізація підручників відповідно до задекларованих результатів та змісту освіти. Сучасна навчальна книга будується на оновлених психологічних, дидактичних та методичних засадах підручникотворення. Однією з вагомих інновацій є трансформація ілюстративної (наочної) складової підручника у візуальну. Це передбачає застосування сучасних форм візуалізації інформації для викладу змісту навчального предмета, а також уведення до методичного апарату підручника завдань, орієнтованих на покращення сприйняття учнями інформації, поданої у візуальній формі, а також упровадження методів візуалізації. Задля цього у підручниках можуть бути запропоновані певні алгоритми опрацювання візуального контенту. Завдання можуть передбачати використання візуалізації даних, інформації, певних концепцій і стратегій. Опрацювання художніх та інформаційних текстів як навчальних можуть включати вправи, спрямовані на пожвавлення візуальної уяви під час читання. Значущим є використання в навчальних книгах з усіх предметів текстів перерваного формату, елементами яких є графіки, діаграми, кольорові й шрифтові виділення, малюнки, мапи, переліки, умовні позначки, покажчики, покликання, примітки, схеми, таблиці тощо. Урізноманітнення матеріалів підручника також можна досягти шляхом використання цифрового візуального контенту. Оптимальним для забезпечення освітніх цілей є доповнення друкованого (паперового) підручника його розширеною цифровою версією, що реалізує застосування широкого кола можливостей інформаційно-комунікаційних освітніх технологій. Фрагментарно підручники, що розробляються в контексті реалізації концепції «Нова українська школа», містять ці нововведення, проте цілісної дидактично та методично виваженої системи візуалізації навчальної інформації як складової сучасної навчальної книги для початкової школи немає. Її впровадження має стати підґрунтям для досягнення високих результатів з формування візуальної грамотності учнів (уміння «читати» та «писати» візуальний контент), визначених у мовно-літературній, математичній, природничій, технологічній, соціальній і здоров’язбережувальній, мистецькій освітніх галузях.
Інформаційний та методичний потенціал фотографії як історичного джерела (на прикладі підручника «Досліджуємо історію і суспільство»)
Authors: Мороз Петро , Мороз Ірина
Published: December 2024

У статті розкривається інформаційний та методичний потенціал фотодокументів як історичного джерела на прикладі підручника «Досліджуємо історію і суспільство», 5 клас. На думку авторів, фотографії є унікальним і надійним засобом збереження історичної пам’яті для наступних поколінь, а також ємним джерелом інформації про історичні події та явища, історичних діячів, традиції, звичаї та повсякденне життя людей у минулому, а також є неоціненним джерелом у вивченні та дослідженні історії рідного краю, його пам’ятних місць, пам’ятників.Авторами проаналізовано праці, присвячені як особливостям дослідження візуальних джерел в історичній науці, так і методиці їх використання в освітньому процесі. Зазначається, що фотодокументи є цілком самодостатніми історичними джерелами, які потребують такої ж джерелознавчої критики та відповідного методичного інструментарію, як і писемні документи чи речові джерела. Проаналізувавши методичні підходи до використання фотографій як історичного джерела, автори пропонують алгоритм їх опрацювання здобувачами освіти.У статті зазначається, що особливу увагу в освітньому процесі варто приділити дослідницькій роботі з фотографіями як історичним джерелом, оскільки вона активізує мислення учнів у цілому й формує здатність до критичного аналізу історичної інформації зокрема.Методична цінність фотографій як історичного джерела, на думку авторів, у тому, що їх використання в освітньому процесі активізує когнітивну, дослідницьку та творчу діяльність учнів і учениць, розвиває їхній пізнавальний інтерес, сприяє стійкості уваги, розвитку критичного мислення та зорової пам’яті, відіграє важливу роль у формуванні їх медіаграмотності та уявлень про історичне минуле.
Аналогія як дослідницький метод у підручниках громадянської та історичної освіти 5 класу
Authors: Жидкова Наталія
Published: December 2024

У статті проаналізовано можливості використання аналогії у дослідницькій діяльності учнів на матеріалах підручників «Досліджуємо історію і суспільство (інтегрований курс). 5 клас». Розкрито класифікацію аналогії та наведено приклади аналогій, що містять підручники, визначено їх місце в дослідницькій діяльності учнів у залежності від виду аналогії.З’ясовано, що метод аналогії для виконання різних функцій потребує низки прийомів дослідження. Аналогія активізує життєвий та навчальний досвід учнів, розвиває логічне мислення, сприяє формуванню гіпотези дослідження, умінь порівнювати та здійснювати перенос ознак з відомого на мало відомий/невідомий учням предмет дослідження, виконує систематизувальну та узагальнювальну функцію, сприяє встановленню закономірності, розвитку творчості учнів. Інструментами аналогії у дослідницькій діяльності учнів є запитання та завдання, ілюстративний матеріал, схеми, ментальні карти, таблиці, міжпредметні зв’язки та ін. Описано етапність використання аналогії у процесі дослідницької діяльності учнів. Наведено результати аналізу підручників та окреслено перспективи системного використання аналогії.
Sibling relationships in Shakespeare's plays : course, quality, and function
Authors:   , Mercer John Moore
Published: December 2024

Despite recent interest in family relationships in Shakespeare, the fifty-five or so sets of siblings in the plays have been largely overlooked. This study groups Shakespeare's siblings into the following chapters: twins, rival brothers, civil brothers, sisters, and brothers and sisters. Each chapter shows similarities in Shakespeare's presentation of three broad aspects of the relationship: course (what happens between the siblings); quality (the emotion and realism of the relationship); and function (the dramatic purpose it serves in the play as a whole). Each chapter then discusses each relationship separately, showing its conformity and distinctiveness. The three sets of twins experience the same separation, mistaken identity, and reunion; display a similar closeness and paradoxical distance; and provide their plays with a quest structure and with humor based on mistaken identity. In most of the eleven sets of rival brothers, an evil brother abuses his sibling to gain the family inheritance. Although these rivalries usually lack realistic motivation, emotional confrontations, and convincing reconciliations, they provide the initial conflict and extensive parallelism. The twenty-four sets of civil brothers cooperate to defend family honor against a dynastic challenge; are politically supportive, personally affectionate, and constructively critical; and function in the background as the cement of society and as foils to rival characters. Although the sisters in all five sororal relationships disagree about a husband and/or father, they have more intimate conversations and more realistic relationships than the brothers. All the sisters are foils to each other. Civil sisters function much as civil brothers do, whereas rival sisters have the more important role of setting up parallel plots in their plays. The thirteen brother-sister-relationships, by far the most affectionate, follow three different courses and function either to provide the central figures of the plot or to illuminate the brother's character. Besides revealing these consistent patterns that Shakespeare uses in presenting sibling relationships, this study also suggests the strong correspondence between siblings in the plays and in Elizabethan--and in universal human--life.
Age determination and population structure in Missouri bullfrogs
Authors:   , Schroeder Eugene Edward
Published: December 2024

"Detailed studies of the life history of the bullfrog (Rana catesbeiana Shaw) in Missouri were initiated by Moyle (1952). He investigated phenology of emergence, call, breeding, transformation, and hibernation; mobility, and growth rates of bullfrogs and bullfrog tadpoles. Later, Willis (1954) studied breeding and transformation of bullfrogs. Ho also Investigated methods of determining age of bullfrogs; although one method seemed promising, he concluded that further work was necessary. Population studies of amphibians have often been severely handicapped by the lack of adequate techniques for aging, as several authors (Cagle, 1956; Turner, 1962) have pointed out. The purposes of the present study were to develop an adequate technique for determination of age of bullfrogs, and to analyze age and growth of several populations. An additional objective was to study the testicular cycle of Missouri bullfrogs end to relate it to the ovarian cycle as described by Willis, Moyle, and Baskett (1956)."--Introduction.
Impacts of the farm crisis on the rural economy
Authors:   , Seiberling Martha Sue
Published: December 2024

This study addresses the issue of the current farm economic crisis and its impacts on the rural economy. Input-output model analysis of secondary data at the state and county levels is combined with a one- shot case study of one rural Missouri county's agribusiness firms. The farm crisis has affected rural Missouri communities since 1981. Input-output analysis suggests that the farm crisis was one of the reasons for a relatively stagnant growth rate from 1981 to 1984, both at the state and the county levels. Personal income analysis shows the relative importance of agriculture in the generation of the state's personal income. While agriculture dropped from tenth to thirteenth place from 1981 to 1984 in the state ranking, it is still one of the top two sources of personal income in all of the rural counties studied, second only to households and their federal transfer payments. The case study revealed that almost all agribusiness firms had been affected, with most firms taking large bankruptcy losses, up to $250,000 since 1977. Income from farm sources is down significantly, and several business firms in the county closed during the period studied, from 1977 to 1985, citing the farm economy as a major reason. The most common complaints concerning the effects of the farm crisis on business firms included a decrease in sales and income, having to cut back on the number of employees, increased farm delinquency rates, a large number of bankruptcy losses, and an inability to offer services to their customers. Over half of those interviewed were pessimistic in the short run, but optimistic in the long run. The businesses that had managed to weather the crisis tended to be more conservative and to depend less on the farm economy. Both the primary and secondary analysis indicate that a decreased farm income has hurt agribusiness firms, the rural communities, rural counties, and the state economy. If the current economic situation continues, it seems likely, that more rural business firms will be forced to close their doors.
Experimental free convection from piping in district heating utilidors
Authors:   , Verhulst Jeffrey Lance
Published: December 2024

Experiments were performed to study the two-dimensional natural convection heat transfer from two isothermal horizontal cylinders to an isothermal cooled rectangular enclosure. The experiments were designed to simulate the heat transfer encountered in underground heat distribution systems. The supply/return lines of the heat distribution system were simulated with two copper cylinders, 15.24 cm and 7.62 cm in diameter. The enclosure was 30 cm in height and 61 cm in width. The cylinders were held in a fixed horizontal arrangement and heated in a way such as to produce nearly isothermal cylinder surfaces. The fluid utilized was water. Results were obtained for the intereactions of the heat transfer between the two cylinders and the enclosure. The data was correlated over a Rayleigh number range of 2.1 x 10^8 to 4.8 x 10^9 based upon the gap width.
Isolation and characterization of a temperature-sensitive rat myoblast cell line
Authors:   , Engel Leslie C.
Published: December 2024

A temperature-sensitive (ts) variant of the established rat myoblast line L6 has isolated and partially characterized. At the permissive temperature (37 [degrees]) the variant cells proceed through the normal sequence of differentiation characterized by growth, alignment, and subsequent fusion to form myotubes. At the nonpermissive temperature (40 [degrees]) neither alignment nor fusion take place. A temperature-shift experiment performed at 3 hour intervals after seeding demonstrated that the temperature-sensitive event occurs 1-5 days after initial plating, while alignment and fusion take place at day 4 and day 5 respectively. Experiments utilizing mixed cultures of L6D0 and tsA1 cells provide evidence for interaction between the two cell types while conditioned medium experiments provide no evidence for the participation of a diffusible extracellular factor in alignment and fusion, and therefore support the hypothesis of surface protein involvement. Extrinsic surface proteins of parental cells (L6D0) and the ts variant were labeled via lactoperoxidase catalyzed iodination and analyzed by SDS-polyacrylamide gel electrophoresis. This experiment revealed substantial differences between the two cell types. L6D0 cultures incubated at both 37 [degrees] and 40 [degrees] and the ts variant grown at 37 [degrees] exhibit similar developmental alterations in surface proteins during myogenesis. Proteins with apparent molecular weights of 98.000, 66.000, 60.000, and 47.000 are associated with alignment. The onset of fusion is associated with the appearance of proteins which migrate at 74.000, 56.000, 40.000, 12.000, and 11.000 D. The temperature-sensitive variant possesses all of the proteins associated with alignment; however the appearance of the 98.000 D protein on day 4 is accompanied by a peptide migrating at 96.000 D. In addition, the non-fusing variant possesses only two of the five proteins associated with fusion.
Energy consumption analysis of cooling tower fan operation
Authors:   , Jameson Randall W.
Published: December 2024

"The purpose of this thesis is to present a method to quantitatively evaluate the annual energy consumption of several types of fan control that may be used on cooling towers. The types of fan control considered are: the cycling of single speed motors, the cycling of two speed motors, the use of variable speed drives (more specifically, variable frequency drives), and the use of automatic variable pitch fans. The energy consumption of these four means of fan control are determined through the use of a computer program. The program calculates the percentage of design air flow required for each wet bulb and heat load combination of a given weather profile for the geographic location of the tower. The theoretically required fan energy is related to the air flow through the fan law relationships. This quantity is then adjusted for any efficiency changes in the fan and drive system to arrive at the actual fan energy requirement. The energy requirement at each weather point is multiplied by its number of hours of occurrence and, added to the values from the other weather points to determine the total annual energy consumption for a given fan mode of operation. The four modes of fan operation are then economically evaluated on a comparative basis."--Introduction.
Numerical method for solving fluid flow and heat transfer equations by design optimization
Authors:   , Kral Linda Dee
Published: December 2024

A numerical procedure for solving fluid flow and heat transfer equations by design optimization is presented. The procedure uses an optimization program based on an exterior penalty function method to solve the partial differential equations. The intent of the investigation is to show that the method is feasible so that the entire design process can be incorporated into an optimization algorithm. Three problems are chosen to examine this method: laminar flow through a rectangular duct; heat conduction on a flat plate; and viscous, incompressible flow over a sphere. Comparison of the optimization approach with the exact solution, when available, and approximate methods is made. The results of the investigation show that the method is feasible, but modifications in the optimization approach are necessary to improve the results.
Parasites of juvenile alosids as biological indicators
Authors:   , Klann Richard D.
Published: December 2024

One hundred and fifty-six juvenile alosids (sixty-one Alosa sapidissima, forty-seven Alosa pseudoharengus and forty-eight Alosa aestivalis) were necropsied for parasitological examination. Twenty metazoan parasites from the following taxa were recovered: one Monogenea, four Digenea, two Cestoda, seven Nematoda, one Nematomorpha, one Acanthocephala, and four Copepoda. The fish were arbitrarily divided into three geographical groups based on location of capture in coastal Atlantic waters. Three measures: the Shannon-Weaver index of diversity, an Equitability index and Simpson's index were used to compare the parasite assemblages of these groups. Analysis of the data demonstrates that distinct differences exist between the parasite assemblages of these groups and suggests the feasibility of using these assemblages as indicators for stock discrimination.
Oxidation of propylene
Authors:   , Baraja Abdullah M
Published: December 2024

Oxidation of propylene with air, using iron molybdate catalyst was studied for the possibility to produce propylene oxide. It was found that no homogeneous reaction took place at 390[degrees]C, and in the presence of the catalyst, propylene was oxidized into carbon dioxide, water, "acids", acetaldehyde and acrolein. No propylene oxide been detected even in trace amounts. By eluting propylene oxide in the feed gas, it was found that no homogeneous reaction took place at 300[degrees]C. In the presence ofthe catalyst, small conversion into acetaldehyde and acrolein at 200[degrees]C, and complete conversion into acetaldehyde and acrolein took place at 300[degrees]C, along with small conversion into carbon dioxide and water. The calculation of conversions using the conservation of nitrogen as inert gas, was found simple and accurate. The activation energy of about 27,000 cal/g-mole was found from the calculation based on the initial rates of propylene and oxygen respectively. The component of the product gas which is called "acids" is not properly identified, but mass spectrographic analysis shows the possibility of maleic and acrylic acids.
Portable circular saw kickback field and computer model simulations
Authors:   , Dienagha Ayebaesin R.S.
Published: December 2024

"The contents of this report are a description of the procedures and results from portable circular saw investigation 2, phase III. As displayed in table 1.1 this project was a continuation of investigation 1, phases I and II. The objectives of each of the three phases are summarized tn table 1.1 along with the project report containing the results of each phase. The two investigations of the project were funded by PTI (Power Tool Institute). Plan B in the June 13, 1979 proposal "Portable Circular Saw Kickback Investigation No. 2" was approved by the PTI Portable Circular Saw Committee (John L. Bennett, Chairman) to conduct field simulation kickback tests to satisfy phase III objectives 1 and 2 as stated in table 1.1. The Portable Saw Committee added objectives 3 and 4 to phase III during their April 1980 project site visit to the University of Missouri-Columbia. Investigator Carson later added objective 5 to verify the apparent trends in the experimental data developed to satisfy objectives 3 and 4, and to individually investigate the influence of each of the saw design parameters listed in table 1.1 on saw kickback."--Introduction.
Flavor quality determination of high lipid dry milk powder
Authors:   , Galvis Fernandez Migdalia
Published: December 2024

"The main objectives of this study are: (1) To develop a method for TBA analysis of dried milk powder. (2) To quantitate the intensity of undesirable flavor produced by UV-irradiation by sensory analysis. (3) To identify volatiles from UV-irradiated dry milk powder by rapid gas liquid chromatography-mass spectrometry."--Introduction.
In situ stress measurement by neutron diffraction
Authors:   , Butler Brent Dennis
Published: December 2024

The purpose of this study was to determine the feasibility of making in situ stress measurements of a tensile sample using neutron diffraction techniques. This study describes: 1) A tensile device for in situ application of uniaxial stress, and 2) A technique for determining the elastic component of strain in the elastic and elastic/ plastic regions for grains of specific crystallographic and physical orientation within a tensile sample under uniaxial load. Elastic constants of particular crystallographic planes were determined for 7079-T6 aluminum alloy, 17-7PH stainless steel, 17-4PH stainless steel, and Ti-6 percentA1-4 percentV. 7M0+ stainless steel, a material with two major phases (austenite and ferrite) was also studied to determine the load sharing characteristics of the individual phases. The elastic constants determined compare with previous X-ray studies but seem to have less scatter in the data, especially in the case of Ti-6 percentA1-4 percentV. No meaningful conclusions can be drawn in the two-phase experiments because of instrumental errors, but the data collection and analysis procedures were developed in the course of this study.
Interactive computer graphics and numerical optimization based mechanism force system synthesis
Authors:   , Karra Chandrasekhar
Published: December 2024

ISD-FORSS-IV computer program was developed to synthesize structurally and dimensionally force systems to drive 4R-4Bar, slider crank and inverted slider crank mechanisms with desired motion time response and/or input-output forces. ISD-FORSS techniques are used as pre- and post-processors to numerical optimization based dimensional synthesis techniques. Three examples, fourbar, haybaler and film indexing turret were used to illustrate ISD-FORSS-IV capabilities and its applications in industry.
Stream-watershed relationships in the Missouri Ozark Plateau province
Authors:   , Smart Miles M
Published: December 2024

Land use was the most influential watershed characteristic determining stream chemical concentrations of 23 streams that drained watersheds with different land uses, geologic bedrock, and soil associations in the Missouri Ozark Plateau Province. Streams were investigated from June 1979 through September 1980 and compared to determine relationships among watersheds, stream water chemistry, and algal biomass. Three streams were monitored for each of the following single land use, non-point watersheds--urban, pasture, and forest, the dominant land uses in the Ozarks, to determine how land use affects stream chemical concentrations. Streams draining non-point source, multiple land use watersheds were compared to determine how several land use practices on specific watersheds influence the chemical and algal composition of streams. Streams draining watersheds with urban land use had the highest chemical concentrations, and streams draining forest watersheds the lowest. Streams draining pasture watersheds were intermediate, more closely resembling forest streams in overall salinity, and urban streams in nitrogen and phosphorus. The variables: NO3-N, SO4^=, TP, NA+, Ca++, Cl^-, TN, NO2-N, and KSP were most influenced by land use and distinctly characterized land use by differences in concentration. Significant positive correlations were determined between urban and pasture areas on multiple land use watersheds and concentrations of plant nutrients and salinity in the stream. Human populations and animal units were features of urban and pasture areas that influenced stream chemical concentrations. Stream variable concentrations increase along a continuum in response to increased urban or pasture areas. In contrast, significant negative correlations were found between the forest area on a watershed and concentrations of most measured variables. Algal biomass in these streams was governed by plant nutrients, streamflow, and morphological characteristics of the stream. Benthic algal biomass was governed by various combinations of TP, NO3-N, NH3-N, current velocity, stream length, and stream gradient depending upon season. Planktonic biomass was governed by TP and NH3-N. Significant correlations between benthic algal biomass upstream from a sampling point and average downstream export of planktonic chlorophyll a indicate that planktonic algae are derived from benthic populations on the streambed. Given appropriate conditions, non-point sources and point-sources can have the same effect on stream algal biomass. The influence from non-point sources on watersheds to stream water chemistry and algal biomass can be reduced in complexity and the effects quantified. Prediction of stream chemical concentrations and algal biomass from watershed land use can be used to assess changes in streams that may occur as the result of watershed alterations.
Furniture ornamentation with inlay and marquetry emphasizing 19th century American furniture
Authors:   , Thompson Carol Jo
Published: December 2024

"Ornamentation of furniture is often more expressive of the individual cabinetmaker than anything else about the piece. The ornament expresses the design abilities of the maker and may, if the piece is custom made, tell something about the person for whom it was designed. In addition, it is often possible to see a reflection of contemporary life in furniture ornamentation. Poorly executed ornamentation of a well structured carcass can be every bit as detrimental to the overall quality of a piece of furniture as can be a poorly structured one. Styles of ornamentation include painting, carving, applied ornament, inlay and veneering. Each of these five processes is comprised of many sub-divisions. Each sub-division yields a totally different end result. Some differences are very subtle requiring a well informed person with a well trained eye to detect the differences. Each of the five processes continue in use today throughout the western world. As with all the arts, styles and popularity change with the times. Inlay and veneering are both very old, complex arts. In reading about furniture one evening, the terms inlay, marquetry and parquetry continually recurred. To verify interpretation several dictionaries and encyclopedias were consulted only to find a type of vagueness and seeming confusion about the meanings of the terms. A twentieth century British wood enthusiast, Edward H. Pinto, stated the problem well when he said "unfortunately, loose words and writing have tended to confuse what was already a difficult division." In addition, the mix of Italian, French, German, Arabic, Latin, English and other languages and many subsequent centuries have tended to further confuse definitions. It was determined a study of these arts should be made for clarification purposes. The intent of this paper therefore, is to study the arts of inlay and marquetry to identify the difference in the processes and the historical development of the two. The focal point of the paper will be the use of these processes in the United States during the nineteenth century."--Introduction.
Lorentzian warped products and static space-times
Authors:   , Allison Dean Edwin
Published: December 2024

Let (M, g) be a Lorentzian manifold, (H, h) a Reimannian manifold, and let f: H [right arrow] (0, [infinity symbol] be an arbitarary smooth function. Then the product manifold M x H with Lorentzian metric g = (f[suprscript 2] g) [omega] h is called a Lorentzian warped product and denoted by M[subscript f] x H. In the case (a,b)[subscript f x H, -[infinity symbol] [less than or equal to] a < b [less than or equal to] [infinity symbol], with metric g = (-f[suprscript 2]dt[superscript 2] [omega] h, the metric is static and the warped product is called a standard static spece-time, Scharzschild space-time, universal anti-de Sitter space-time, and the Einstein static universe.
Development of manual arts instruction in cities of the United States
Authors:   , Taft Linwood
Published: December 2024

Text from page 1: "The aim of this study is to trace the development of manual arts instruction from the time when it was first suggested as a possible solution for the problem of a more practical training in school for the actual occupations of life down to the present bifurcation into the distinct fields of (1) general manual arts courses in the common schools and (2) special vocational courses in trade and vocational schools under public control."
The metabolism and localization of glycerol by bovine spermatozoa
Authors:   , Pickett B. W
Published: December 2024

Since the discovery that glycerol, a trihydroxy alcohol, would provide protection for spermatozoa during the freezing and thawing process, many questions have arisen concerning its metabolism and mode of action. Most of the recent work, with various types of single cells ans tissues, has shown that the cells are permeated by glycerol and that entry must occur before full protection is afforded. However, the methods employed in the majority of these studies have not proven successful for bovine spermatozoa, possibly due to its extremely inflexible cellular membrane and/or the slow rate at which glycerol enters the cell. The majority of the information concerning glycerol entry into bovine spermatozoa bas been supplied by metabolic studies. These studies have indicated that glycerol is metabolized by spermatozoa both anaerobically and aerobically in quantities too large to attribute the action to extracellular enzymes alone. However, relatively little information is available concerning the intracellular loci of glycerol action. Thus, this investigation was undertaken to provide additional information concerning the metabolism and localization of glycerol in the bovine spermatozoa.
William Whitehead : a study of his life, his place in his day, and his works
Authors:   , Neebe Frederick Louis
Published: December 2024

The purpose of this dissertation is to study the literary career of William Whitehead, a minor eighteenth-century poet and dramatist. Whitehead was for a time closely associated with Garrick as a playwright and reader of plays, and was known to his contemporaries as a successful poet. He was appointed poet laureate in 1785. He was also an author of a few essays, which appeared in contemporary magazines. Not much scholarly work has been done on Whitehead's career. The only two recent studies of any magnitude are a doctoral dissertation by Hans Plattner on Whitehead's two tragedies(1914); and a German monograph by August Bitter on Whitehead's life and works(1933). Bitter's major interest lay in finding the romantic elements in Whitehead's poetry. His work, however, is not up-to-date and has, consequently, omitted valuable material. Cursory discussions of Whitehead's life and works have been included in accounts of the poets laureate. Tobin, in his Eighteenth Century English Literature and its Cultural Background. A Bibliography(1939), lists but five primary sources of Whitehead's works and only four studies, including those by Bitter and Plattner. Another of these studies in Mason's Memoirs of his Whitehead's Life and Writing(1788), the source which has furnished most of the material for those who wrote of Whitehead's life. It is regrettable that Mason, who included a large number of Gray's letters in his Memoirs of the Life and Writings of Mr. Gray(1775), did not include any by Whitehead in the Memoirs of Whitehead. The Harcourt Papers partially supply this deficiency. The present work treats Whitehead's life and his literary activities. It seeks to evaluate Whitehead's literary productions, and, by presenting the evidence from contemporary journals and writers, to indicate his reputation in his own day. In order to furnish a background for detailed study of Whitehead's works, his life is presented chronologically in Chapter One, Chapter Two presents a study and estimate of his poems, other than the odes written during his laureateship, with a consideration of their verse forms, the influence of other posts on them, and appraisal of their permanent worth. The odes are discussed in Chapter Three, chiefly with respect to the ideas contained therein, since the odes themselves are not outstanding as poetry. In Chapter Four Whitehead's meager publication in prose are discussed. In Chapter Five Whitehead's tragedies and one burlesque drmatic sketch are considered, with stress placed upon their reception in their own day, not only in England, but also in America. Chapter Six considers his two lighter dramas, The School for Lovers and A Trip to Scotland. It is hoped that this dissertation may be some help in the greater task of giving a complete picture of eighteenth-century literature.--Introduction.
The survivals of medieval religious drama in New Mexico
Authors:   , Martin Charles B.
Published: December 2024

Every year in many remote villages in New Mexico people gather at Christmas and Easter to witness dramatic productions of Biblical stories concerning these two seasons. Although these religious performances have taken on many new characteristics through the centuries, they are not, as many critics think, a new and quaint form of folk drama but instead are a curious remnant of a very old form of religious drama which was transported from medieval Spain to colonial Mexico and finally up the Rio Grande valley to New Mexico. Certainly these plays have come a long way from their medieval ancestors, the religious mysteries that were part of the 'liturgical services within the church, and have disintegrated and beoome secularized through their transmission from the church to the laity. Of the ten extant plays in New Mexico today, three treat subjects from the Old Testaments Adam y Eva, Cain y Abel, and Lucifer y San Miguel. Plays of Adam and Eve and Cain and Abel were not new, having been presented in Mexico, Spain, and central Europe. Five of the extant plays present subjects from the New Testaments El Coloquio de San Joa, Los Pastores, Auto de los Reyes Magos, El Nino Perdido, and La Pasion. There are two others not liturgical in origin, which can be traced back to the Middle Ages, Los moroa y loa cristianos and las Cuatro Apariciones de la Virgen de Guadalupe....
Model for the thermoregulation of sea lions
Authors:   , Natarajan V.
Published: December 2024

"INTRODUCTION Mathematical modeling in biological systems is a relatively new and challenging field for chemical engineers. Application of heat and mass transfer and reaction kinetics allows development of these models for biological systems in accordance with the basic physical laws of nature. Most physiological control systems are very complex and are difficult to describe on an intuitive approach. Prediction or interpretation of experimental results may involve separation of many interacting factors. Although thermoregulation has this characteristic in common with most physiological control systems, it has the distinction that parts of the overall system obey relatively simple physical laws which can be combined in quantitative form. Marine mammals face particularly severe thermal challenges from their environment. An animal diving in the ocean not only encounters the latitudinal and seasonal temperature changes in oceanic waters, but also goes through a vertical stratification of temperatures on a very short term basis. While on land they encounter great seasonal and diurnal changes in temperature. So the study of the thermoregulatory system during both surface activity and diving could be of considerable importance to the understanding of thermoregulation of mammals in general."--Page 1.
Substrate specificity and properties of heat-stable proteases from Pseudomonas fluorescens
Authors:   , Mitchell Steven Lynn
Published: December 2024

Extracellular proteases and lipases from strains P26, 32A, Pl, and P27 of Pseudomonas fluorescens were produced using a dialysis membrane method. The proteases were partially purified by molecular exclusion chromatography (MWC0=60,000) and selected biochemical characteristics were determined. Proteases of all strains were heat-stable (62.5 [degrees] C, 30 min), neutral ([greater than] 84Z of total activity between ph 6 and 8), metalloenzymes (inhibited by 10 mM EDTA). Optimal temperature for activity was approximately 37 [degrees] C, but all proteases were active at 5 [degrees] C and 25 [degrees] C. Activation energies on azocasein ranged from 4.5 (Pl) to -1 14.0 (32A) KcaLmole. All extracellular proteases had strong endopeptidase activity, but no exopeptidase (aminopeptidase) activity was detected. Proteolytic activity on purified milk proteins was measured using an o-phthaldialdehyde assay. Specific activities of the pseudomonal proteases on casein proteins were significantly higher (p [less than] 0.01) than on whey proteins. Hydrolysis of whole casein by proteases of strains P26, 32A and P27 was significantly greater than on a-, 6- or k- casein whereas protease of strain Pl hydrolyzed whole casein and a-casein at equal rates. The proteases varied in their abilities to hydrolyze a-, 8- and k-casein. Bovine serum albumin (BSA), B-lactoglobulin and a- lactalbumin were weakly hydrolyzed by the proteases. Among the whey proteins, proteases of strains P26 and 32A hydrolyzed BSA at a higher rate than B-lactoglobulin or a- lactalbumin. Peptides generated from the hydrolysis of oxidized ribonuclease A by proteases of known specificity (trypsin, chymotrypsin, Staphylococcus aureus protease) and the pseudomonal proteases were separated by RP-HPLC. The proteases of known specificity generated a low number of peptides in relatively high concentrations. Proteases of strains P26, 32A, Pl, and P27 produced higher numbers of peptides and the majority of these peptides were in low concentrations. Thus, the pseudomonal proteases exhibited a wider substrate specificity. Among the heat-stable proteases, those of strains P26 and 32A hydrolyzed a wider range of peptide bonds than proteases of strains Pl and P27.
Dynamics and Features of Unemployment in the Siberian Region in the Second Half of the 1920s
Authors:   Institute of History of the Siberian Branch of the Russian Academy of Sciences, Potapova Natalia
Published: December 2024

The article analyzes the number of unemployed people in the Siberian Region in the second half of the 1920s, as well as the features of unemployment in the region. The relevance of the topic is determined by the persistence of this problem in the modern world, so a systematic study of the historical experience of regulating and limiting the growth of unemployment can be useful for reducing social difficulties in modern society. The policy of the Bolsheviks in the first post-war decade, including the introduction of the NEP and the weakening of the policy of strict regulation of the economy, caused an increase in the number of unemployed individuals in the Soviet state. During the period under review, the official unemployment in the USSR, in general, and in the Siberian Region, in particular, reached its maximum values compared to previous years, becoming stagnant. The real economic picture did not correspond to the ideological doctrine of the ruling party, which allowed unemployment only in capitalist countries. The work questions the thesis, entrenched in Soviet historiography, about the elimination of unemployment in the USSR in the early 1930s, and, based on various statistical data, a conclusion is made about the state of the labor market in the Siberian region in the second half of the 1920s.
Belarus – Kazakhstan: opportunities for university cooperation of historians (To the anniversary of the academician of the Academy of History and Social Sciences of the Republic of Kazakhstan, Doctor of History (DHis), Full Professor Tlegen Sadykovich Sadykov)
Authors:   Academy of Education of the Ministry of Education of the Republic of Belarus, Skok Veronika , Ratsko Alexander ,   Belarusian State Pedagogical University named after Maxim Tank
Published: December 2024

The article is devoted to study the experience of international cooperation of historical faculties between Belarusian State Pedagogical University named after Maxim Tank and L.N. Gumilyov Eurasian National University. Much credit in establishing friendly relations between structural subdivisions of the universities goes to the Academician T.S. Sadykov, a distinguished member of the Academy of History and Social Sciences of the Republic of Kazakhstan, a Professor and a Doctor of Historical Sciences. His life and work are not just an example to follow but also a moral guide for the future generation. The objective of the work is studying the potential of developing bilateral Belarusian-Kazakh relations of university historians. The materials of the study are presented by the documents from the authors’ personal archives. The authors come to a conclusion that friendly and constructive Belarusian-Kazakh relations, thanks to balanced national policy and international dialogue conducted by Belarusian and Kazakh governments, should continue being among the promising areas of international cooperation of the two countries. This is especially relevant for the systems of higher historical education of the two countries.
Penerapan BVA dan EP pada Aplikasi Pencatatan Bahan dan Produksi
Authors: Marselio Devin , Wilhelmus Aloysius Michael
Published: December 2024

Aplikasi pencatatan bahan baku dan hasil produksi berfungsi untuk memudahkan proses pencatatan dan memastikan konsistensi data, sehingga mengurangi risiko ketidaksesuaian data yang dapat mempengaruhi operasional perusahaan. Sebelum aplikasi pencatatan bahan baku dan hasil produksi masuk pada tahap deploy, diperlukan pengujian terlebih dahulu terhadap aplikasi pencatatan bahan baku dan hasil produksi. Dilakukannya pengujian pada aplikasi yang sedang dibangun untuk memastikan kesesuaian antara kebutuhan awal perangkat lunak dibuat dengan fungsi-fungsi yang ada pada aplikasi pencatatan bahan baku dan hasil produksi. Metode pengujian yang digunakan dalam menguji aplikasi adalah metode Boundary Value Analysis (BVA) dan Equivalence Partitioning (EP). Pengujian dilakukan pada beberapa form pada aplikasi dengan mengukur nilai pada batas atas dan batas bawah melalui beberapa tahapan yang telah ditentukan pada setiap kolom yang ada pada form tersebut. Dalam hasil pengujian terdapat form-form yang gagal uji antara lain Form Login dan Form Kelola Akun. Hasil pengujian ini dapat digunakan sebagai masukan untuk meningkatkan aplikasi dan menjadi referensi dalam pengujian kualitas aplikasi pencatatan bahan baku dan hasil produksi dengan menganalisis fungsionalitas program yang telah dibuat sesuai dengan hasil yang diinginkan.