bluuebunny/crossref_metadata_2025 huggingface dataset:
ENTREPRENEURSHIP COMPETENCE OF THE PRINCIPAL IN IMPROVING SCHOOL INDEPENDENCE IN SD MUHAMMADIYAH KLECO 2 KOTAGEDE YOGYAKARTA
Authors: Syapriyuda Sandy , Santosa Achadi Budi
Published: January 2020

The purpose of this study is to know : (1). entrepreneurship competencies of the principal of SD Muhammadiyah Kleco 2 Kotagede Yogyakarta. (2). programs that carried out by school principals in developing school potential, and (3) the competence of principals increases school independence. This research uses a qualitative approach. Data collection is done by observation, in-depth interviews, and documentation studies. Conclusions are drawn in a variety of extrapolations based on the reliability of research findings. While the validity of the data is carried out in terms of credibility, transferability, and confirmation. The results of the study are as follows (1). The principal of the Muhammadiyah Kleco 2 Elementary School has good entrepreneurial competence, as evidenced by (a). innovations made. (b). work hard to achieve school success. (c). strong motivation for success. (d). always looking for the best solution in facing obstacles faced by schools. (e). The principal has an entrepreneurial instinct in managing school activities as a source of learning for students (2). Able to plan and run school programs and develop school potential. (3). Able to increase school independence.
PRINCIPAL TRANSFORMATIONAL LEADERSHIP IN HIGH SCHOOL OF CENTRAL KALIMANTAN
Authors: Kartiwi Asti Putri
Published: January 2020

Transformational leadership is considered to play an important role in improving the quality of service because a transformational leader can foster a strong commitment between staff and the organization, as well as staff and teammates where they are willing to work beyond their own abilities for the organization and become potential partners for the organization. This study aims to look at the condition of principals' transformational leadership in state high schools in Central Kalimantan Province with indicators to be seen including Idealized Influenced, Inspiration Motivation, and Intellectual Stimulation. The method used is descriptive quantitative with the teacher as the respondent. Based on the results of the study it is known that the transformational leadership condition of the headmaster of state high schools in the province of Central Kalimantan is in the sufficient category. Suggestions and recommendations are given to school principals to increase intellectual stimulation to subordinates, especially teachers at the school.
THE IMPACT OF WHATSAPP TOWARD UAD UNDERGRADUATE STUDENTS’ BEHAVIOR IN LEARNING PROCESS
Authors: Rahaded Umar , Puspitasari Erna , Hidayati Dian
Published: January 2020

WhatsApp is one of the social media that is used to communicate in the learning process. At present, students cannot be separated from their daily activities away from this social media. This opportunity can be utilized as well as possible by the students. This research was conducted to find out of using WhatsApp toward undergraduate students’ behavior in the teaching and learning process. This study was descriptive qualitative research. The data were analyzed using descriptive analysis technique. The data were collected using interviews, observation, and documentation. The aim of this study to analyze the impact of WhatsApp toward undergraduate students’ behavior and to analyze students’ behavior in their learning process. The result of this research showed that are a positive impact on student behavior as it affects the learning process as, students’ sharing knowledge, student preparation for class, attention, student participation in class, student learning, desires to take additional classes or in subject matter and the negative impact such as, students are more focused.
Antimicrobial prescribing for hospital-acquired pneumonia
Authors: Felton Tim , Wootton Dan
Published: January 2020

The impact of hospital-acquired pneumonia and the pressure to reduce unnecessary antibiotic prescribing has lead to the publication of prescribing guidelines from the National Institute for Health and Care Excellence. This editorial gives an overview of the guidelines and emphasises the need for more high-quality evidence to inform decision making in this group of patients.
Night-time compression is not a new concept
Authors: Whitaker Justine
Published: January 2020

The application of compression to the lower limbs is used in many primary and secondary conditions. Most forms of compression such as bandages, stockings and wrap systems are available on prescription. The underlying conditions are often chronic and therefore do not dramatically alter within a 24-hour period. However, there are no clear guidelines to indicate when to remove it or keep it on during this time. Understanding the effects of compression, considering the evidence, knowing when to use compression at night, and when not to will be explored and discussed.
Hopkins procedure for tunable magnification: surgical spectacles
Authors: Gómez-Sarabia Cristina M. , Ojeda-Castañeda Jorge
Published: January 2020

We analyze the use of two varifocal lenses, with fixed interlens separation, for achieving tunable magnification at a specific throw. Our discussion extends the Hopkins procedure circumscribed to the determination of fixed optical powers in a multilens system. We illustrate our results by presenting the Gaussian optics design of surgical spectacles, which have tunable magnification while generating virtual images with zero throw. We also report novel formulas describing this type of two-lens zoom system, which works without any mechanical compensation.
Light Sailing into the Great Beyond
Authors: Swartzlander Grover , Johnson Les , Betts Bruce
Published: January 2020

Powering spacecraft by radiation pressure from solar or laser
light, once the province of science fiction, is becoming increasingly
practical with advances in photonic technology and the space economy.
Meet OSA’s 2020 Fellows
Authors: Smith Meredith , Apter Kari , Hornback Samantha
Published: January 2020

Congratulations to the 94 members of the 2020 class of OSA Fellow
Members, who will be recognized at OSA conferences throughout the year for
scientific, engineering and technological contributions, as well as
industry leadership and service to OSA and the global optics
community.
Super-bunched focusing with chirped random-phase gratings
Authors: Zhang Lu , Zhou Dongxu , Lu Yiping , Zhang Hongzhi , Zhang Guoquan
Published: January 2020

Chirped random-phase gratings are designed to produce experimentally a super-bunched focusing effect with a high bunching peak value of

g

(
2
)

(
0
)
=
15.38
±
0.05

and a high visibility of 92.5%, greatly surpassing the theoretical bunching peak of 2 of thermal light. Both slit-width-chirped and period-chirped random-phase gratings are studied theoretically and experimentally. The full width at half-maximum of the super-bunched curve decreases significantly with an increase in the slit number, focusing the photon pairs within a decreasing spot size. This super-bunched focusing effect can be useful for improving the resolution and the visibility of the correlation image simultaneously.
Microcrystal modulated exciton-polariton emissions from single ZnO@ZnO:Ga microwire
Authors: Mao Wangqi , Jiang Mingming , Ji Jiaolong , Wan Peng , Zhou Xiangbo , Kan Caixia
Published: January 2020

Due to their outstanding surface-to-volume ratio, highly smooth surface, and well-defined crystal boundary, semiconducting micro-/nanocrystals have been used as a pivotal platform to fabricate multifunctional optoelectronic devices, such as superresolution imaging devices, solar concentrators, photodetectors, light-emitting diodes (LEDs), and lasers. In particular, micro-/nanocrystals as key elements can be employed to tailor the fundamental optical and electronic transport properties of integrated hetero-/homostructures. Herein, ZnO microcrystal-decorated pre-synthesized Ga-doped ZnO microwire (ZnO@ZnO:Ga MW) was prepared. The single ZnO@ZnO:Ga MW can be used to construct optically pumped Fabry–Perot (F–P) mode microlasers, with the dominating lasing peaks centered in the violet spectral region. Stabilized exciton-polariton emissions from single ZnO@ZnO:Ga MW-based heterojunction diode can also be realized. The deposited ZnO microcrystals can facilitate the strong coupling of F–P optical modes with excitons, leading to the formation of exciton-polariton features in the ZnO@ZnO:Ga MW. Therefore, the waveguiding lighting behavior and energy-band alignment of ZnO microcrystal-sheathed ZnO:Ga MW radial structures should be extremely attractive for potential applications in semiconducting microstructure-based optoelectronic devices, such as micro-LEDs, laser microcavities, waveguides, and photodetectors.
Abdallah Hammadi, Dīwān maŷalla Hunā al-Ŷazā’ir, Argel, Dār Bahā’ al-Dīn, 2019 [ISBN 987-9931-342-42-9]
Authors: Torres Fernández Antonio
Published: January 2020

Reseña de: Dīwān maŷalla Hunā al-Ŷazā’irpor: Antonio Torres Fernández
Cell-mediated and humoral immune profile to hydatidosis among naturally infected farm animals
Authors: Abo-Aziza Faten A. M. , Hendawy Seham H. M. , Oda Samah S. , Aboelsoued Dina , El Shanawany Eman E.
Published: January 2020

Background and Aim: Cystic echinococcosis (CE) is a widespread parasitic disease caused by Echinococcus granulosus tapeworm infect different intermediate hosts including sheep, cattle, and camels. The intermediate host's immune response to the hydatid cyst is still conflict and complex. The current study was designed to evaluate the immune response in sera of hydatid naturally infected sheep, cattle, and camels in the form of features of inflammatory cell infiltrations, levels of Th1 and Th2 cytokines, besides the humoral specific immunoglobulin G (IgG) responses. Materials and Methods: Thirty-nine sheep, 74 cattle, and 79 camels' sera were collected and considered as CE naturally infected and ten samples from each species were graded as non-infected. Lung specimens were collected for histopathological examination. The quantitative concentrations of tumor necrosis factor-α, interleukin (IL)-6, IL-4, and IL-10 were determined. Different antigens were prepared from hydatid cyst; hydatid cyst fluid of lung origin hydatid cyst fluid of liver origin, hydatid cyst protoscoleces of lung origin (HCP-g), hydatid cyst protoscoleces of liver origin , hydatid cyst germinal layer of lung origin, and hydatid cyst germinal layer of liver origin; and characterized by gel electrophoresis and Western blotting analysis. The total specific IgG level against E. granulosus infection was measured using an indirect enzyme-linked immunosorbent assay. Results: The results indicated that the cellular immune response in the infected tissues was characterized by inflammatory cell penetration. The pro-inflammatory Th1 cytokine profile was predominant in infected animals in comparison with non-infected ones. However, the humoral immune response was seen as a high level of IgG in infected animals. The presented data approved that the HCP-g antigen could be considered as a delegate antigen for all other prepared antigens with an immunoreactive band at molecular weights 32 kDa. Conclusion: This study provides a fundamental insight into the events that manipulate cellular and humoral immune profiles in an intermediate host; sheep, cattle, and camel that naturally infected with CE. Hence, it was concluded that CE is a constant disease and confirm the reactivity Th1 in combating hydatid cyst. Besides, it could lead to the activation of the humoral immune response in the form of a high level of IgG.
A történelmi tudat fejlesztésének jelentősége és problémái
Authors: Kojanitz László
Published: January 2020

A történelemoktatás válságban van, és ez a válság összefügg az általános történelmi kultúra leépülésével.Miközben a történelemtanítás igyekszik továbbra is a történettudomány szemléletét és a történeti kutatások eredményeit közvetíteni, a mindennapi életben és a médiákban zajló viták tartalma és hangneme, az emberek történelmi múltról alkotott képe egyre jobban távolodik ettől. A tanulmányomban azt mutatom be, hogy mik a történelemtanítás lehetséges szerepei egy olyan korszakban, amelyben egyoldalúan konstruált és egymással élesen szemben álló múltképek kezdik eluralni a közbeszédet, a médiát és a mindennapi gondolkodást. Ennek során felhasználom majd Peter Seixas e probléma értelmezéséhez készített modelljét, foglalkozom Jörn Rüsennek és Andreas Körbernek a történelmi tudat különböző szintjeiről és fejlődéséről kialakított koncepciójával, és azokkal a gondolatokkal is, amelyeket Peter J. Lee fogalmazott meg a történelemtanítás autonómiájának fontosságáról.
Determination of Vitamin A and Vitamin E Contents in Fortified Cooking Oil using Visible Spectrophotometry
Authors: Kesuma Sandry , Sabarudin Akhmad , Ulfa Siti Mariyah
Published: January 2020

For measuring vitamins A and E in fortified palm oil, trichloroacetic acid (TCA) through visible spectrophotometry and total antioxidant capacity (TAC) through phenanthroline method were developed. Using TCA determination method, vitamin A was directly measured at λ = 620 nm, with 92.84 % ± 0.74 accuracy, 0.79 % RSD, 2.15 IU/g limit of detection (LOD) and 7.17 IU/g limit of quantitation (LOQ). Using the mole difference calculation method of Fe2+ after Fe3+ reduction by total antioxidants and vitamin A, vitamin E content was indirectly measured. Total antioxidant capacity required for reducing Fe3+ was determined using phenanthroline method at λ = 510 nm. The temperature and reaction time for the saponification process were also evaluated. Optimum saponification was obtained at 70 ºC in 20 min with a recovery percentage of 93.81 %. Determined Vitamin E had 93.94 % ± 0.63 accuracy, 0.68 % RSD, 0.11 IU/g LOD and 0.76 IU/g LOQ.
Clinical and radiographic evaluation of Curcumin Gel mixed Endoflas (CGE) powder as obturating material in primary molars
Authors: Menni Alekhya Chowdary , Ambati Naga Radhakrishna , Ghanashyam Prasad Madu
Published: January 2020

Background:Zinc oxide eugenol(ZOE) has long been the material of choice for obturating primary teeth,but it is resistant to resorption, might result in a deflected successor and has limited antibacterial efficacy. Curcuminpossessesanti-inflammatory and antimicrobialproperties which can be implied by its use as obturating material in primary teeth.Objective: To evaluate and compare the efficacy of Curcumin Gel mixed Endoflas powderand Zinc oxide eugenol as obturating materials in primary molars.Material and Methods: A total of 30 primary molars indicated for pulpectomy were selected from 4-9-year-old children and divided into two equal groups based on the obturating material used. Group 1- Curcumin Gel mixed Endoflas powder(CGE) and Group 2- Zinc oxide eugenol(ZOE). The efficacy of these obturation materials was evaluatedboth clinically and radiographically. Follow-up was done after 1, 3and 6months to evaluate clinical and radiographical success rates. The results were subjected to statistical analysis using SPSS software version 21 usingchi-square test.Results: At the end of the 6th month follow-up,there was 93.3% clinical success inGroup 1compared with 86.6% success in Group 2. Whereas, radiographically success reported was 100% with Group 1and93.3% with Group 2. The difference in the radiographic success rate between the two Groups was statistically significant (P <0.05).Conclusion: Based on the present study results, Curcumin Gel mixed Endoflas powder can be considered as an alternative obturation material for treating deciduous molars with extensive involvement of pulp and peri-radicular tissues.KeywordsPulpectomy;Obturating materials;Endoflas;Antimicrobials;Turmeric; Zinc oxide eugenol.
Gardner Syndrome imaging features in plain radiographs and computed tomography: a case report
Authors: Munhoz Luciana , IIda Christyan Hiroshi , Arita Emiko Saito , Watanabe Plauto Christopher Aranha
Published: January 2020

Gardner syndrome (GS) is a genetic disease with high penetrance characterized by a signal triad of colonic polyposis, multiple osteomas and mesenchymal tumors in the soft tissues and skin. The colonic polyposis is associated to the development of malignant disease. Patients also may present maxillomandibular alterations such as impacted teeth, supernumerary teeth, congenital missing teeth and odontomas. Bone lesions and maxillomandibular alterations usually precedes the gastrointestinal alterations; hence dentists should be aware of GS syndrome main radiographic signals  , in order to detect the disease and proper referred the patient to medical treatment and surveillance. Thus, in this report, it is demonstrated a case of GS in a male patient, as well as discussed GS features.
Comparative evaluation of the effect of various irrigants and dry canal on electronic apex locators in locating simulated root perforations: an in vitro study
Authors: Srivastava Swati , Gaikwad Rahul , Dalal Alayed M
Published: January 2020

Objective: this study aimed to evaluate the effects of irrigants and dry canal on the accuracy of electronic apex locator (EAL) in locating simulated root perforations. Material and methods: twenty singlerooted, mandibular premolars were decoronated at CEJ, and the contents were removed with a barbed broach. The canals were instrumented up to a size of 15 K-file. The roots were artificially perforated at 4 mm from the anatomic apex. The actual length (AL) up to the perforation site was determined. The electronic length (EL) of perforations was obtained by Root ZX mini and iRoot in the dry canal and in the presence of 5.2% NaOCl, SmearOff, and 0.9% sodium chloride using a size 20 K-file. The differences between the EL and AL of the perforations were calculated. Statistical analyses using Friedman and Wilcoxon signed-rank tests were used to analyse the data with the level of significance set at p < 0.05. Results: there were significant differences in different canal conditions with both Root ZX mini and i Root. Measurements in dry canals were significantly longer for both apex locators (p < 0.05). Measurements with NaOCl were significantly shorter for both apex locators (p < 0.05). Both apex locators produced significantly accurate values for Saline and Smear OFF (p < 0.05). Conclusions: in this study, both Root ZX mini and i Root were affected by different canal conditions. The most accurate measurements were seen in the presence of saline and SmearOFF.KEYWORDS Electronic apex locator; I Root; Perforation; Root ZX mini; SmearOFF; Sodium hypochlorite; Saline.Keywords: Electronic apex locator, i Root, perforation, Root ZX mini, SmearOFF, sodium hypochlorite, saline
Association of Khat chewing, smoking, age and sex with periodontal status among Yemeni adults
Authors: Al-hajj Wadhah , Hwaiti Hisham , Shamala Anas , Al-Azazi Hamza , Alwesabi Mohammed
Published: January 2020

Objective: Periodontal diseases are very common dental disease. Many risk factors may play significant role in the periodontal disease initiation and progression. This study was performed to evaluate the effects of khat chewing, smoking, age and gender on periodontal status among Yemeni adults. Material and Methods: This cross-sectional study was performed on 1231 patients attending the outpatient dental polyclinics of University of Science and Technology during the academic years 2017/2018.. All completed sheets were collected throughout the year by the supervisors. Data cleaning, descriptive statistics, and inferential statistics were then performed. Results: Khat chewers were more frequent than non-chewers counterparts (60.7% vs. 39.3%). The prevalence of smoking was 25.5% (297 patients). Study results indicated that periodontitis is more associated with female gender and  participants aged more than 35 years old. Results also showed that female and age older participants aged more than 35 years were significantly associated with gingival recession. Mean number of the teeth with gingival recession in male patients were higher than in females. Male gender and patients aged more than 35 years old were significantly associated with furcation involvement. Conclusion: The present study has shown females gender and age older than 35 seem to be risk factors of periodontal diseases. Males has more teeth affected by gingival recession and more furcation involvement.KeywordsPeriodontal disease; Khat chewing; Smoking; Yemen; Risk factors.
Evaluating Cytotoxic Effects of Highly Esthetic Dental Composites
Authors: Aydın Numan , Karaoğlanoğlu Serpil , Oktay Elif Aybala , Kılıç Süloğlu Aysun
Published: January 2020

Amaç: Di? hekimli?i alan?nda nanoteknoloji alan?nda odakl? di? kompozitler, ön ve arka di?lerin oldu?u yerlerde yayg?n olarak yap?l?r. L929 fare fibroblast sitotoksik oldu?u için in vitro ekstrakt test yöntemi ile ara?t?r?ld?.Gereç ve Yöntemler: Steril bir dolapta cam moddaki led ???k cihaz?yla polimerle?tirilerek 8x2 mm çap?nda kompozit numuneler haz?rland?. Kompozit numuneler yüzey plakalar? (3 cm ISO standartlar?na göre 2 / ml hesapland? ), 37 ° C s?cakl?kta, 24 ve 72 saat süre ile inkübe edildi O C. Hücre canl?l???, 3- [4,5-dimetiltiyazol-2-il ile de?erlendirildi] -2,5-difeniltetrazolyum bromür (MTT) deneyi ve hücre ölümü laktat dehidrojenaz (LDH) s?z?nt? deneyi ile de?erlendirildi.Sonuçlar: 24 saatin sonunda kompozitlerin 1: 1 ekstraktlar? (nanoseramik kompozit hariç) toksik etki göstermedi. Kompozit numunelerin 1: 1 ekstrelerinin hücre canl?l??? sonuçlar?, 72 saat sonra analiz edilece?i halde, kontrol grubuna göre anlaml? farkl?l?klar bulundu (p <0.05).Sonuç: Dolgu tipinin ve boyutunun kompozitlerin toksisitesinde etkili olmas? ve organik matrikslerde Bis-GMA, TEGDMA, UDMA ve Bis EMA monomerlerini içeren kompozitlerin istenildi?i yerde canl? canl?l??? (% 70) gösterdi?i görülmektedir. ISO taraf?ndan söyildi. Orada birlikte, organik matrislerinde PEGDMA ve BPA monomerlerine sahip olan, sahip olan kompozitler,% 70'in oldu?u kabul edilebilir seviyesinin alt?nda olan ve toksik olan bir ve Türkiye'nin sahip ve zay?f ortamdaki canl?l??? vard?r.
Efficiency of application of Trichoderma on the physiological quality and health of cowpea seeds
Authors: Reis Higor Barbosa , Rodrigues Artenisa Cerqueira , Chagas Junior Aloisio Freitas , Bonifacio Aurenivia , Santos Gil Rodrigues
Published: January 2020

One of the main causes of low productivity of cowpea crops in Brazil is the use of low quality seeds. Low quality seeds have a high degree of infestation by phytopathogens, mainly fungi. Seed treatment with biological control agents, such as fungi of the genus Trichoderma, is a useful alternative to reduce or inhibit the transmission of diseases via seeds. In view of the above, this study aims to evaluate the physiological and sanitary quality of cowpea seeds treated with conidia of Trichoderma sp. (1.2, 2.4, 4.8 and 9.6 x 108 CFU g-1). We evaluated the germination and the sanity of seeds, length of seedling radicles, and production of indole acetic acid (IAA) by fungi. The experimental design was completely randomized in all experiments. In general, there was a predominance of Fusarium spp. and Rhizoctonia solani. The treatment of seeds with the conidia of Trichoderma sp. was positive for the parameters related to germination and radicle length of cowpea beans up to the concentration 4.8 x 108 CFU g-1. We conclude that the application of Trichoderma sp. was efficient in reducing the incidence of Fusarium spp., and promoted the germination and elongation of the radicle in cowpea.
Linear correlations between feed intake and ingestive behavior of feedlot lambs
Authors: Figueiredo Cibelle Borges , Santana Junior Hermogenes Almeida , Oliveira Aracele Prates , Santos Maurílio Souza dos , Mendes Fabrício Bacelar Lima , Cardoso-Santana Elizângela Oliveira
Published: January 2020

The objective of this study was to evaluate linear correlations between feed intake and ingestive behavior of feedlot lambs. Were used ten castrated male Santa Inês sheep with a body weight of 20 ± 4.38 kg, at four months of age. The experiment lasted 50 days, with five 10-d periods, in which an evaluation of feed intake and ingestive behavior was undertaken per period, totaling 50 replicates. The diet was composed of concentrate ingredients only. The analyses were performed by Pearson’s linear correlations and the t test, and means were considered significant when P≤0.05. Intake showed positive correlations (P≤0.05) with the times spent feeding and ruminating and total chewing time, and a negative correlation (P≤0.05) with other activities. Positive correlations were found between the number of feeding periods, number of other activities and the time per rumination period with intake (P≤0.05). A negative correlation was found between the feed efficiency of dry matter and the intake, as well as the other nutrients (P≤0.05). The behavioral characteristics related to feed intake appear to be correlated, which allows for inferences through the study of these variables. The activities related to nutrient intake, with respect to time and efficiency, can be expressed directly through the animal behavior.
Sunflower nutrition irrigated with domestic sewage treated
Authors: Dantas Daniel Costa , Silva Ênio Farias de França e , Dantas Mara Suyane Marques , Silva Gerônimo Ferreira da , Rolim Mario Monteiro
Published: January 2020

This study aimed to evaluate the nutritional status of the sunflower (Helianthus annus L.) irrigated with domestic effluents. The study was performed in a pilot sewage treatment plant, where the treatments were composed by the combination of two factors: types of water (A1 - effluent treated by UASB reactor; A2 – effluent treated with digester decant and anaerobic filtering; A3 – effluent treated with anaerobic filtering; and A4 – water supply) and irrigation depths (L1 - equal to the crop evapotranspiration (ETc) and L2 – 1.2 ETc. The experimental design was in randomized blocks, in a 4 x 2 factorial scheme, with four replications. At 96 days after sowing, the leaves, capitulum, and achenes were collected for the concentration evaluation of N, P, K, Ca, Mg and S. The analyses of variance were performed based on the concentration of the nutrients in the respective organs; when significant, they were analyzed by orthogonal contrasts. The sunflower nutritional status was influenced by the types of treatment for the domestic sewage, especially regarding N, Ca and S, and by the irrigation depths; the sunflower crop presented a better nutritional balance when irrigated with treated domestic effluents; with the application of the water supply only, the nutritional supply of the P and S, is necessary.
Compared Cranial Osteology of Species of Leptoptilus (Lesson, 1831) (Aves, Ciconiidae)
Authors: Oliveira Pamela Rayara de Souza , Donatelli Reginaldo José , Neves Arthur Serejo , Santos Francisco Das Chagas Vieira , Santos Suely Silva , Nascimento Muryllo Do Santos , FERREIRA GUILHERME JOSE BOLZANI DE CAMPOS , Guzzi Anderson
Published: January 2020

The species of the Ciconiidae family (Ciconiiformes), commonly known as storks, exhibit a cosmopolite distribution, being represented by swamp birds of medium and large size. The present work aimed to describe minutely and comparatively the cranial osteology of Leptoptilus species. The study was performed based on the description of cranial bones of the species Leptoptilus dubius, L. crumeniferus, and L. javanicus. The studied specimens were previously prepared (dry crania and mandibles). Among the studied characteristics, it was possible to observe some structures of systematic importance, such as the zygomatic process, the temporal fossa, the ectethmoid, the superior maxilla, the quadrate bone that interconnects the palate, the neurocranium, and the mandible, performing a key role in the work of cranial kinesis. Leptoptilus javanicus possesses, in the lateral portion of the cranium, an emargination of the rostrodorsal edge of the postorbital process, not observed in either Leptoptilus dubius or Leptoptilus crumeniferus. The fossa ventralis possesses a projection in the caudal extremities in L. dubius and L. crumeniferus, which is absent in L. javanicus. The transpalatine process is present in both L. dubius and L. crumeniferus and is absent in L. javanicus. The pterygoid process of the palatine is short in both L. dubius and L. crumeniferus, and long in L. javanicus. The ectethmoid is reduced in both L. dubius and L. javanicus, whereas in L. crumeniferus, besides being more developed, it presents a “U” shape. Based on the present study, L. dubius and L. crumeniferus are phylogenetically closer to each other than L. javanicus.
Biology of Diadiplosis multifila (Diptera: Cecidomyiidae) in Planococcus citri under constant temperatures
Authors: Dos Santos Alexandre Martins , De Morais Oliveira José Eudes , Moreira de Carvalho Andréa Nunes , De Oliveira Martin Duarte , Oliveira de Assis Carla Patrícia , Cariri Lopes Fabiana Soares
Published: January 2020

Diadiplosis multifila was recently discovered feeding on Planococcus citri eggs in vineyards in the semi-arid northeast region of Brazil. The objective of the present paper was to study the biology of D. multifila in P. citri under constant temperatures of 22, 25, 28, and 31 °C. We evaluated its embryonic stage, egg viability, development period, survival of larva and pupa, longevity, average number of eggs, and sex ratio. D. multifila completed its life cycle in all temperatures except for 31 °C. The length of the embryonic period ranged from 4 to 7 days. The larval stage was longer at a temperature of 22 °C (8.6 days) and shorter at 28 °C (6.4). The pupal stage exhibited durations of 12.9, 10.4, and 8.2 days for temperatures of 22, 25, and 28 °C, respectively. The average viability in the larval stage was 97% and 83% in the pupal stage. The total life cycle took 16.7 (28 °C), 20 (25 °C), and 27 (22 °C) days to complete. The adults lived for approximately 2 days and the females produced on average 34, 25, and 19 eggs at temperatures of 22, 25, and 28 °C, respectively. The sex ratio varied from 0.46 to 0.54.
Induction of tolerance to salt stress in soursop seedlings using hydrogen peroxide
Authors: Da Silva André Alisson Rodrigues , De Lima Geovani Soares , Vieira de Azevedo Carlos Alberto , De Sá Almeida Veloso Luana Lucas , Capitulino Jessica Dayanne , Gheyi Hans Raj
Published: January 2020

The exogenous use of hydrogen peroxide is an alternative in the acclimatization of plants to salt stress due to the greater activity of antioxidant enzymes. In this perspective, this study aimed to evaluate the gas exchange and the growth of soursop seedlings under salt stress using hydrogen peroxide. The study was conducted under greenhouse conditions. The treatments were distributed in randomized blocks, in a 5 x 2 factorial arrangement, related to five levels of electrical conductivity of the irrigation water - ECw (0.6, 1.2, 1.8, 2.4, and 3.0 dS m-1) and two concentrations of hydrogen peroxide - H2O2 (0 and 20 μM), with four replicates and two plants per plot. The effects of the treatments were evaluated by the variables of gas exchange and growth. The increase in water salinity negatively affected the gas exchange and the growth of the soursop seedlings. The gas exchange and growth variables presented deleterious effects caused by the salinity of the irrigation water, mitigated by the exogenous application of hydrogen peroxide at the concentration of 20 μM. The exogenous use of hydrogen peroxide at the concentration of 20 μM can be used to induce salt tolerance in soursop seedlings.
Tipologías nutricionales en población infantil menor de 5 años de la provincia de Chimborazo, Ecuador
Authors: Ramos-Padilla Patricio , Delgado-López Verónica , Villavicencio-Barriga Verónica , Carpio-Arias Tannia
Published: January 2020

Introducción: El objetivo de este estudio fue establecer tipologías nutricionales de niños y niñas menores de 5 años de edad. Material y métodos: Estudio observacional. Se estudiaron 6.040 niños y niñas menores de 5 años (2.955 hombres y 3.085 mujeres) atendidos en las unidades operativas de la Dirección Provincial de Salud de Chimborazo durante el año 2013. Las variables estudiadas fueron: zona geográfica, edad, sexo, peso, longitud/talla, lactancia materna y suplementación con Hierro y Vitamina A. Para el diagnóstico del estado nutricional se utilizó los indicadores antropométricos: talla para edad (T//E) é índice de masa corporal para edad (IMC//E), los puntos de corte que se utilizaron para el diagnóstico del estado nutricional fueron de la OMS-2006. Los datos se analizaron utilizando los programas Anthro v1.0.4 y JMP v11. Se realizó un análisis univariable y luego un análisis multivariable por cluster con el método K means para establecer tipologías nutricionales. Resultados: La prevalencia de retardo en talla fue de 36,8 % y la prevalencia exceso de peso fue de 6.3 %. El cluster (conglomerado) 3 presenta las siguientes características; menor T//E, mayor IMC//E, menor edad, menor tiempo de lactancia exclusiva, menor edad de destete, mediana prescripción de hierro y Vitamina A. Este cluster representa el 54,95 % de los niños y niñas. Conclusión: El cluster 3 es el de mayor importancia para el apoyo y vigilancia nutricional.
Uso da combinação linear de soluções físicas no estudo da natureza do ponto estacionário da ação
Authors: Reis Fábio Pascoal dos , Pereira Uilian de Oliveira , Menezes Pablo Henrique , Y. Castro Elisângela Aparecida
Published: January 2020

O princípio de Hamilton aﬁrma que, dentre todas as curvas entre dois extremos ﬁxos, o caminho que é realmente seguido por um sistema físico será aquele que atribui um valor estacionário (pontos mínimos, máximos ou de sela) à ação (uma integral no tempo da diferença entre a energia cinética e a energia potencial, tomada entre o tempo inicial e o tempo ﬁnal em que sistema funciona). É comum usar uma ferramenta matemática chamada Cálculo de Variacional para estudar o princípio de Hamilton. O Cálculo Variacional lida com funcionais (funções das funções) e é uma versão mais geral e mais complexa do cálculo usual que aprendemos na graduação. Neste artigo, apresentamos uma abordagem alternativa e mais simples ao estudo do princípio de Hamilton. Estudamos a natureza do movimento estacionário da ação de três sistemas físicos: partícula livre, lançamento vertical e oscilador harmônico, usando como movimento virtual uma combinação linear da solução física desses três sistemas. Encontramos evidências de que a solução física do problema de partículas livres leva a um mínimo em sua ação. Os mesmos resultados ocorrem no problema de lançamento vertical. A solução física do oscilador harmônico leva a um ponto mínimo ou de sela em sua ação, a depender do intervalo de tempo de funcionamento do sistema.
Análise do empoderamento tecnológico pelo PIBID
Authors: Fonseca Douglas Silva , Moura Éliton Meireles de
Published: January 2020

Nesse artigo buscamos compreender como o Programa Institucional de Bolsas de Iniciação à Docência (PIBID) se tornou importante como ferramenta para empoderar tecnologicamente a formação de futuros professores. Apresentamos inicialmente algumas políticas públicas, dentre elas o PIBID que veio diminuir a distância entre o Ensino Superior praticado nas Universidades e Institutos com a Educação Básica de nossas escolas públicas brasileiras, e logo depois mostramos números sobre a expansão deste programa. O uso de ferramentas tecnológicas dentro das salas de aula se torna mais frequente com o desenvolvimento da própria tecnologia. Acreditamos que essa inserção no contexto escolar além de inevitável é também necessária. O fato é que os problemas estruturais e de caráter formativo são evidentes em escolas e universidades. O restante do artigo se baseia em um estudo de doutorado e outro de mestrado que trataram sobre o cenário macro e micro do PIBID para o trabalho com uso das tecnologias digitais de informação e comunicação, em subprojetos de matemática, por todo o território brasileiro no decorrer destes quase 10 anos de atuação do programa demonstrando que houve um amadurecimento devido à compreensão do Cotidiano Escolar, principalmente pela importância dada ao trabalho coletivo e diálogo com pensamentos diferentes, resultando reﬂexão sistemática sobre as práticas pedagógicas.
Investigando a produção de significados em Cálculo Diferencial e Integral
Authors: Costa Leonardo Silva , Oliveira Cristiane Coppe de
Published: January 2020

É notória a preocupação de docentes que atuam em diversas áreas do Ensino Superior sobre os crescentes índices de reprovação nas disciplinas que exigem competências e habilidades matemáticas. Uma dessas disciplinas é o Cálculo Diferencial e Integral, presente, não só no Curso de Matemática, mas também em cursos de graduação ligados às Ciências da Natureza, às Ciências Econômicas e a quase todos os cursos de Engenharia. O presente trabalho pretendeu investigar quais significados os estudantes dos cursos de Matemática e Engenharia de Produção de uma Instituição de Ensino Superior na cidade de Ituiutaba/MG, atribuem a alguns conceitos a cerca da disciplina Cálculo Diferencial e Integral. Tal proposta foi analisada mediante a aplicação de fichas de Trabalho aos estudantes, elaboradas com questões que promovessem o levantamento/discussão de algumas ideias que circulam nos saberes que envolvem o cálculo. Após esta etapa, levantou-se três categorias, relacionadas ao nível semântico produzido pelos graduandos e suas relações, priorizando os conceitos de Funções, Continuidade, Limites e Derivada. A investigação apontou que os estudantes carregam em seu discurso significados semelhantes à linguagem dos livros textos da disciplina de cálculo e não conseguem produzir seus próprios significados. Espera-se, com essa investigação, contribuir para uma discussão em torno do ensino de Cálculo, na busca em apontar possibilidades de solução para a evasão/reprovação na disciplina, promovendo uma Educação crítica, reflexiva e atuante no cenário do Ensino Superior.
Pengaruh Kegiatan Bermain Adonan Sabun terhadap Perkembangan Kreativitas Anak di Raudhatul Athfal 03 Ishlahul Ummah Kota Sawahlunto
Authors: Bunga Tri Rahayu  , Yulsyofriend
Published: January 2020

Besed on research observations at Raudhatul Athfal 03 Ishlahul Ummah, Kota Sawahlunto, researchers found that the problem of children’s creativity is not optimally developed. This can be seen in the activities of creativity development: coloring pictures, where the average coloring results of children are almost the same as those in LKS. Likewise in the development of other creativity, to make as children like with plasticine, children are only able to imitate other friends to other friends in the example where there is a teacher’s direction. This is due in part to the lack of children’s creativity in creating new works in Raudhatul Athfal 03 Ishlahul Ummah, Kota Sawahlunto. To overcome these problems, researchers look for alter native solutions through the activities of playing soap dough. Therefore through the play of soap dough is thought to influence the development of creativity of children 5-6 years. The purpose of this study was to determine whether the influence of soap dough play activities on the development of creativity of children 5-6 years at Raudhatul athfal 03 Ishlahul Ummah, Kota Sawahlunto. This research uses a quantitative approach with Quasi Experimental design using experimental methods. The study population was all children in Raudhatul Athfal 03 Ishlahul Ummah, Kota Sawahlunto,with the sampling technique being purposive sampling, namely B2 group for the experimental class and B1 group for the control class, each totaling 13 children. Based on data analysis, th experimental group’s average testresults were 62.82 and SD was 7.75 while the control group was 57.69 and SD was 6.08. In testing the hypothesis obtained t count of 2,78595 < and t table of 2.06390 at the real level α = 0.05 (5%) and dk=24. So it can be concluded that the activity of playing soap dough on the development of creativity of children 5-6 years at Raudhatul Athfal 03 Ishlahul Ummah, Kota Sawahlunto 2019/2020 school year.
Implementasi Pendidikan terhadap Pola Kebiasaan Anak Berkebutuhan Khusus (Studi Kasus Kehidupan Septi Anak diduga Down Syndrome di Dusun Jetis Desa Mororejo Kec. Tempel Sleman Yogyakarta)
Authors: Rizka Amalia
Published: January 2020

In a simple child with special needs is a child whose development is different from normal children in general. Children with special needs have some characteristics, which are usually referred to as disorders or abnormalities, one of the disorders or abnormalities is a down syndrome. Down syndrome can happen to anyone and anywhere, be it from poor or rich families, no exception it happens to Septi 12-year-old child who was forced to daily hear the taunts of his peers and parents who forbid his children who Normal to get along with Septi. Septi's life is one example of the many cases of Down Syndrome  that occur in children in Indonesia. From the phenomenon that then makes the importance of knowing and reviewing the Pattern of Habits of Children with Special Needs (Case Study of Life Septi Children allegedly Down Syndrome  in Dusun Jetis Desa Mororejo Kec. Tempel Sleman Yogyakarta)
El sentido del amor
Authors: Ortiz-Osés Andrés
Published: January 2020

Pavel Florenski es un exquisito escritor ruso, filósofo, científico y teólogo, nacido en Rusia en 1882 y fusilado por el régimen soviético en 1937, influenciado por L.Tolstoi y colega de M. Bulgakov. Sacerdote ortodoxo casado, es autor de una obra tardíamente conocida, en la que destaca La columna y el fundamento de la fe, y que yo he podido conocer gracias a un amigo italiano, Nunzio, al tiempo que me regala la obra El pensamiento polifónico de P. Florenski2. Me quedo sorprendido por el interés de este pensador efectivamente polifónico, cuya clave musical está en la noción radical de la relación, lo que me recuerda a nuestro Angel Amor Ruibal, pues la relación separa y repara todas las cosas y sus antinomias, si bien en el ruso la relación se constituye específicamente a través del simbolismo, y de un simbolismo de signo platónico-cristiano. En efecto, el platonismo de Florenski es un platonismo encarnado, así pues un idealismo encarnatorio, según el cual hay que conectar la inmanencia fenoménica con la trascendencia nouménica, y viceversa, de acuerdo con la divisa propia de todo humanismo cristiano: salvaguardar lo divino es salvaguardar lo humano.
Zubiri, un «oculto y sagaz» lector de Hegel. En torno al curso «Reflexiones filosóficas sobre lo estético»
Authors: Espinoza Lolas Ricardo , Lombardo Bertolin Patricio
Published: January 2020

Este artículo indaga en el Curso de dos lecciones sobre lo estético, titulado Reflexiones filosóficas sobre lo estético, un «hilo teórico» muy poco estudiado por los especialistas. Este Curso que realizó Zubiri en 1975, estaba muy mayor, se analiza cómo se muestra lo más radical para entender lo estético desde sus categorías filosóficas, pero de la «mano invisible» de Hegel. No se trata del Hegel que critica explícitamente Zubiri (y en el texto mismo) y que se coloca siempre de forma muy distante al pensador alemán, sino de lo categorial mismo del pensamiento hegeliano que Zubiri «echa mano» para mostrar cómo opera lo más propio de su pensamiento para dar cuenta del complejo tema de la articulación de lo estético y la realidad. Aquí vemos que el pensamiento de Hegel tiene mucho que aportar para poder entender lo estético mismo. Y esto, incluso, más allá de lo que el mismo Hegel, como pensador de su tiempo, filosofaba respecto del tema del arte y/ o lo estético.
El diálogo de María Zambrano con Unamuno y Antonio Machado, filosofía primera para la cultura actual
Authors: Sánchez Orantos Antonio
Published: January 2020

La presencia de Unamuno y Antonio Machado en la propuesta filosófica de María Zambrano invita a redefinir la filosofía primera como tarea que todo ser humano debería asumir para dar pleno cumplimiento a la llamada que, manifestándose en su interioridad, invita a hacerse cargo de la alteridad y, por eso, piedad y misericordia, a fundar adecuadamente caminos de diálogo en busca de esa verdad, que por no uniformar y sí pedir unidad, abre proyectos de verdadera comunidad: diferentes buscando fraternidad.
Penggunaan Zeolit Alam Terdealuminasi Sebagai Adsorben Senyawa Aromatik
Authors: Sriatun Sriatun , Darmawan Adi
Published: January 2020

Sifat pembakaran bahan bakar sangat dipengaruhi oleh komponen senyawa yang terkandung didalamnya. Diketahui bahwa adanya senyawa hidrokarbon aromatik dapat memberikan asap yang berlebihan pada pembakaran. Tentu saja hal ini tidak menguntungkan karena menimbulkan polusi udara. Untuk mengurangi senyawa hidrokarbon aromatik dalam bahan bakar dapat menggunakan zeolit alam yang sudah didealuminasi karena zeolit mempunyai kelebihan dalam hal struktur, bentuk, ukuran rongga dan pori yang spesifik.Prosedur kerja dalam penelitian ini meliputi dealuminasi zeolit alam melalui pengasaman dengan HCl dan H2SO4 dan penambahan oksidator KMnO4.. Zeolit hasil dealuminasi digunakan untuk mengadsorpsi komponen hidrokarbon aromatik pada minyak bumi fraksi 200 – 300oC. Karakterisasi produk dilakukan dengan analisis titik anilinnya, kromatografi gas (GC) dan pemeriksaan warna.Hasil uji adsorpsi menunjukkan bahwa zeolit terdealuminasi mampu mengadsorp senyawa hidrokarbon aromatik tetapi tidak signifikan. Hal ini ditunjukkan oleh kenaikan titik anilin produk, perubahan kromatogram pada puncak-puncak tertentu dan warna produk lebih terang.
Pengaruh Molekul Pengarah Struktur Terhadap Modifikasi Zeolit Alam Untuk Padatan Pendukung Amobilsasi Sel Khamir Phaffia rhodozyma
Authors: Suseno Ahmad
Published: January 2020

Modifikasi zeolit dari bahan zeolit alam telah dilakukan dengan menggunanakan pereaksi silika dan alumina berasal dari zeolit alam, tetrabutilamonium thiosianida sebagai kation basa organik, setil-trimetilammonium bromida sebagai molekul pengarah struktur dan natrium silikat untuk memperkaya kandungan silikat.Tahapan modifikasi dilakukan melalui destruksi basa, hidrotermal, dilanjutkan dengan proses kalsinasi pada temperatur 550oC. Hasil modifikasi selanjutnya dikarakterisasi mengguna-kan FTIR, XRD, serta pengukuran pori dengan metoda adsorpsi gas.Hasil penelitian menunjukkan bahwa padatan hasil modifikasi memiliki karakter mikrostruktur padatan berpori dengan kristalinitas tinggi dan ukuran pori rerata sebesar 27Å. Uji aplikasi menunjukkan bahwa padatan hasil modifikasi dapat digunakan sebagai padatan pendukung amobilisasi sel Khamir Phaffia rhodozyma.Kata kunci : zeolit alam, ukuran pori, molekul pengarah struktur
Perengkahan Produk Cair Batubara dengan Katalis Ni/Zeolit
Authors: Suyati Linda , Setiaji Bambang , Triyono Triyono
Published: January 2020

Penelitian pirolisis tir batubara dilakukan dengan menggunakan metode alir termokopel dalam reactor. Temperatur reaktor konstan pada temperature 450oC-700oC untuk reaksi termal. Dan untuk reaksi katalitik dilakukan pada temperature 350oC-600oC. Berat katalis dan laju alir H2 adalah konstan. Hasil menunjukkan bahwa pada temperature tinggi reaksi termal pirolisis adalah gas, sedangkan dengan menggunakan katalis adalah kokas. Konversi dengan katalis Ni/Zeolit dibawah temperature 550oC lebih besar dibandingkan secara termal. Hasil cairan terbanyak pada temperatur 600oC hasil utama senyawa phenol pada reaksi katalitik.
Penambahan EDTA sebagai Inhibitor pada Laju Korosi Logam Tembaga
Authors: Nuryanto Rahmad , Lusiana Retno Ariadi , Khabibi Khabibi
Published: January 2020

Telah dilakukan penelitian tentang pengaruh penambahan agen chelat EDTA untuk menghambat laju korosi pada logam tembaga. Penelitian ini menggunakan metoda penentuan korosi melalui pengukuran resistansi logam, di mana kenaikan resistansi pada logam tersebut menandai bahwa logam yang terkorosi semakin meningkat. Pengukuran korosi dilakukan terhadap kawat tembaga dan kawat tembaga yang dichelat dengan media pengkorosi H2SO4 1M. Hasil penelitian terhadap kawat tembaga dengan panjang 3 m dan diameter 0,5 mm yang dichelat dengan EDTA 1 M menunjukkan penurunan korosi sebesar 20,6%Kata kunci: inhibitor, korosi, EDTA, tembaga