bluuebunny/crossref_metadata_2025 huggingface dataset:
El maestro Raúl Porras en el recuerdo de sus alumnos Carlos Eduardo Zavaleta y Mario Vargas Llosa
Authors: Carrillo Mauriz Sonia Luz
Published: December 2019

ResumenEl legado del maestro Raúl Porras Barrenechea en la voz de su alumno, el narrador peruano y profesor sanmarquino, Carlos Eduardo Zavaleta, con importantes menciones a lo expresado por Mario Vargas Llosa, también discípulo del maestro, es el motivo del presente artículo. Datos valiosos y testimonios se entrelazan con el relato de vivencias y certeras apreciaciones de Porras como fino escritor y se constituyen en señalamiento de las tareas pendientes para una más amplia difusión de las obras del maestro Porras Barrenechea.

Palabras clave: Raúl Porras Barrenechea, Carlos Eduardo Zavaleta, Mario Vargas Llosa, Historia, Literatura.

AbstratThe purpose of this paper is the legacy of the master Raúl Porras Barrenechea in the voice of his student – the peruvian narrator and professor of the National University of San Marcos, Carlos Eduardo Zavaleta – with important mentions to what was expressed by Mario Vargas Llosa, also a disciple of the teacher. Valuable data and testimonies are intertwined with the story of experiences and certain assessments of Porras as a fine writer, it is constituted pointing out the outstanding tasks for a wider dissemination of the works of the master Porras Barrenechea.

Keywords: Raúl Porras Barrenechea, Carlos Eduardo Zavaleta, Mario Vargas Llosa, History, Literature
Biología de las células madre mesenquimales y sus aplicaciones en medicina regenerativa
Authors: Gonzales Figueroa Hugo , Gonzales Molfino Hugo Mauricio
Published: December 2019

ResumenLas células madre mesenquimales (CMM) se pueden definir como células estromales mesenquimales multipotentes que proliferan in vitro y tienen una morfología similar a fibroblastos, forman colonias in vitro y pueden diferenciarse en osteoblastos, condrocitos y adipocitos, así como mantienen interacciones con el sistema inmune. Estas CMM pueden ser aisladas y expandidas en medio de cultivo debido a sus propiedades de adhesión al plástico del matraz de cultivo, diferenciación y proliferación in vitro. Se ha logrado aislar y mantener en cultivo CMM de articulaciones del quiridio de caballo, cuya subpoblación STRO-1 positiva mantenida en condiciones de hipoxia se diferencia por el linaje de condrocitos identificados por la reacción azul Alcian. Las propiedades inmunorreguladoras de las CMM causan la alteración de la proliferación y las funciones efectoras de la mayoría de las poblaciones celulares del sistema inmune, innato y adaptativo.Las características de diferenciación multilinaje y de inmunoregulación de las CMM está permitiendo su usoen medicina regenerativa; se estima que en los próximos 5 años el potencial de esta nueva estrategia terapéutica podrá visualizarse porque habrá muchos productos y protocolos de tratamiento basados en la medicina regenerativa.

Palabras clave: células madre mesenquimales (CMM), multipotencia, inmunoregulación, linajes celulares, cultivo in vitro, proliferación

 

AbstractMesenchymal stem cells (MSCs) can be defined as multipotent mesenchymal stromal cells that proliferate in vitro and have a fibroblast-like morphology and form in vitro colonies. They can distinguish into osteoblasts, chondrocytes, and adipocytes, as well as interact with the immune system. These MSCs can be isolated and expanded in culture medium due to their properties of adhesion to the culture flask plastic, differentiation, and proliferation in vitro. Isolation and CMM culture of joints of the horse chiridium has been achieved, whose subpopulation STRO-1 positive maintained in hypoxia conditions differs from chondrocyte lineage identified by the Alcian blue reaction. The immunoregulatory properties of MSCs cause alteration of the proliferation and effector functions of most cell populations of the immune, innate and adaptive system. The multilinear differentiation and immunoregulation characteristics of MSCs are allowing their use in regenerative medicine. It is estimated that in the next 5 years the potential of this new therapeutic strategycan be visualized because there will be many products and treatment protocols based on regenerative medicine.

Keywords: mesenchymal stem cells (MSC), multipotency, immunoregulation, cell lineages, in vitro culture, proliferation.
TOPLUMSAL CİNSİYET PERSPEKTİFİNDE ERKEKLİK VE KADINLIK ALGISI: BİR ALAN ARAŞTIRMASI
Authors: ÖZDEMİR Hacı
Published: December 2019

Bu çalışmanın amacı üniversite mezunu erkeklerin erkeklik
ve kadınlık algılarını deşifre ederek erkeklik ve kadınlık algılarının
geleneksel toplumsal cinsiyet çizgisi dışına çıkıp çıkmadığı noktaları ortaya
koymaktır. Bu temel amaç kapsamında 30-45 yaş aralığında, çeşitli mesleklerden
20 erkekle derinlemesine görüşmeler yapılmıştır. Nitel yöntemin takip edildiği
çalışmada olgubilim(fenomenoloji) modeli yürütülmüş ve verilerin analizinde
fenomenolojik analiz kullanılmıştır. Elde edilen verilerin çözümlenmesi
sonucunda görüşmecilerin erkeklik ve kadınlık algılarının çoğunlukla geleneksel
toplumsal cinsiyet çizgisine denk düştüğü görülmüştür. Erkeklik; fiziksel
olarak güçlü olmakla, aile geçimini sağlamakla, heteroseksüellikle, duygularını
göstermemekle veya gösterememekle tanımlanmaktadır. İdeal erkek, ailesinin
maddi imkânlarını sağlayarak kimseye muhtaç etmeyen olarak ifade edilmektedir.
Sünnet ve babalık konusunda algı değişikliği yaşanmaktadır. Sünnet erkekliğin
kazanıldığı bir olgu olarak görülmemekte ve baba figürü çocuklar üzerinde
hâkimiyet kuran pasif bir varlık yerine çocukları üzerinde sorumluluk alan,
onlara yol gösterici olan aktif bir rol içinde tanımlanmaktadır. Kadınlığın
temel referansları; narin, kırılgan, duygusal ve fiziksel olarak güzel olmaktır.
Kadının en önemli rolleri annelik ve ev içi roller olarak ifade edilmektedir.
Kadınlık ciddi zorlukları içinde barındırdığından erkeklerin üyesi olmak
istemedikleri bir varoluştur. Bunun sebebi olarak ev içi işlerin kadınlara
yüklenmesi, şiddet ve tacizlere daha çok maruz kalmaları, özgürlük alanlarının
kısıtlı olması, toplumdaki eşitsiz cinsiyet algısı gösterilmektedir. Genel
olarak kadınlık algısı geleneksel toplumsal cinsiyet algısına denk düşmektedir.
OSMANLI KUDÜS’ÜNDE KAÇAKÇILIK FAALİYETLERİNE GENEL BİR BAKIŞ (1886-1914)
Authors: Togral Özge
Published: December 2019

Yüzyıllar boyunca dini statüsünü koruyan Kudüs, sadece dini özelliğinden dolayı değil stratejik konumundan dolayı da siyasi çekişmelerin meydana geldiği bir şehir olmuştur. Siyasi nedenlerle 19.yüzyılda demografik yapısının sürekli değiştiği görülmüştür. Bu dönemde gerek Müslüman gerek, Yahudi ve Hıristiyan tüccarların bir arada yaşadığı, ticari faaliyetlerini gerçekleştirdiği bir ortam haline gelmiştir. Genellikle zeytin, pamuk, sebze ve meyve gibi belli başlı tarım ürünlerinin ticareti yapılmaktadır. 19. yüzyılda Kudüs Mutasarrıflığı dâhilinde bulunan Gazze ve Yafa gibi liman şehirleri Kudüs ticaretinin canlanmasına sebep olmuştur. Nitekim Gazze ve Yafa diğer Doğu Akdeniz limanlarıyla bağlantısı olan önemli noktalardır. Söz konusu bu liman şehirlerinde yasal ticaretin yanı sıra kanuna aykırı ticaret de gerçekleşmiştir. Kudüs Mutasarrıflığı dâhilinde kaçak ticaretin artmasının pek çok sebebi vardır. Özellikle 19. yüzyılda şimendifer hattının Kudüs’e kadar uzatılarak ulaşım ağının geliştirilmesi bu etkenlerden sadece birisidir. Söz konusu yapılan çalışmanın ana amacı: 19.yüzyıl sonları ve 20. yüzyılın ilk çeyreğinde Kudüs Mutasarrıflığı dahilinde gerçekleşen kaçakçılık faaliyetlerinin sebeplerini ve önleyici tedbirleri incelemektir. Yapılan çalışmanın ana kaynağı olan, T.C. Cumhurbaşkanlığı Devlet Arşivleri Başkanlığı bünyesinde bulunan Osmanlı Arşivi’nden temin edilen Kudüs’teki kaçakçılığa ilişkin belgelerin 1886 ve 1914 yılları arasında yoğunlaştığı tespit edilmiş ve çalışma bu tarihler arasında sınırlandırılmıştır. Bu bağlamda kaçak ticarete konu olan başta tütün, tuz ve silah olmak üzere çeşitli ürünler tespit edilmiştir. Bu nedenle her ürün kaçakçılığı ayrı olarak değerlendirilecektir. Özellikle kaçakçılığa zemin hazırlayan siyasi ve sosyal etkenler üzerinde durulacaktır. Bu kapsamda arşiv belgelerinin yanı sıra, Osmanlı Devleti’nin iç ve dış gümrük uygulamaları ile ilgili çeşitli araştırma ve inceleme eserler göz önünde bulundurularak Kudüs Mutasarrıflığında gerçekleşen kaçakçılık faaliyetleri incelenecektir.
Having a break: Prolonged dormancy observed in a rare species, Fritillaria meleagris
Authors: Tatarenko Irina
Published: December 2019

Fritillaria meleagris L. is a rare species mainly associated with floodplain forests and meadows. Conservation of populations of this species needs to consider a key aspect of its life history – prolonged dormancy (PD). In F. meleagris, this was observed during 8-years monitoring of individual plants on the protected ancient Lugg Meadow in the UK. One-year PD was most frequently observed in the population, followed by 2-year PD. Seven-year dormancy was the longest recorded. Twenty two percent of plants didn’t display PD during the observation period. Large variability in the patterns of individual plants submerging and re-emerging from dormancy in different years, suggested individual genetic heterogeneity as the main factor driving PD of the species. Three morphological states were identified in dormant plants of F. meleagris including a false dormancy in individuals which carried on growing below ground. Patterns of PD in rare species need to be studied on individually monitored plants and applied to models of population dynamics for species conservation purposes
Improvement of bioavability of medicinal herbs by fermentation with Lactobacillus plantarum
Authors: Dogan Kubra , Tornuk Fatih
Published: December 2019

Background: Medicinal and aromatic plants, which are rich sources of bioactive conpounds, have been used in traditional medicine for ancient times. Epidemiological studies have shown that bioactive compounds of medicinal plants possess antioxidant, anti-inflammatory, antiatherosclerotic, antitumor, antimutagenic, anticarcinogenic, antibacterial and antiviral activities. Intake of natural antioxidants derived from medicinal plants into body has been associated with reduced risks of cancer, cardiovascular disease, diabetes, and other diseases. It has also been demonstrated that the fermentation of plants is a versatile way for improvement of their functionality and bioavailability. The aim of this study was to determine the effect of probiotic fermentation and vacuum drying on the bioavailability of peppermint (Mentha piperita) and basil (Ocimum basilicum) exposed to in vitro digestion.Methods: Fresh basil and peppermint were divided to 3 lots, one lot of each plant was vacuum dried at 40 °C for 8 hours to obtain the dried samples while one lot was fermented with probiotic Lactobacillus plantarum for 21 days at room temperature after incorporation with sterile brine (1:20 w:v) containing 5 % of NaCl. Thereby, 3 samples were obtained: Fresh peppermint/basil, vacuum dried peppermint/basil and fermented peppermint/basil. During the in vitro digestion comprised from gastric and pancreatic digestion, bioavailability of the samples were investigated by measurement of their total phenolic contents (TPCs), total flavonoid contents (TFCs) and antiradical activity. TPC was determined using Folin-Ciocalteu method while TFC was measured aluminum chloride colorimetric assay. The antiradical activity of the samples was analyzed by determination of the DPPH radical scavenging activity.Results: The initial (undigested) TPC levels of fresh, vacuum dried and fermented mint and basils ranged from 166.24 to 295.08 mg gallic acid equivalent (GAE)/g. Drying and fermentation increased TPCs of the plants. Similarly, TFCs and antiradical activities were also increased by these treatments. When considering bioavailability of the bioactive compounds, fermentation process enabled higher recovery levels after in vitro digestion while basil exhibited higher percent recovery than mint.Conclusion: This study demonstrated that vacuum drying and fermentation of basil and mint with probiotic Lactobacillus plantarum provided much stronger antioxidant activity and bioavailability than fresh ones and increased their in vitro bioavailability.
Design of a new type yokeless and segmented armature axial flux machine
Authors: Chang Jiujian , Fan Yanen , Zhu Bo , Luo Liang , Wu Jinglai , Pan Yishan , Kang Peng
Published: December 2019

This paper takes the demand of high power density motor for new energy vehicles as the application background. In order to solve the problem of low power density of radial flux motor, a novel direct cooling yokeless and segmented armature axial flux machine (YASA) is proposed. The thermal-fluid multi-physical coupling field of YASA motor has been studied by combining numerical analysis and computational fluid dynamics (CFD). On this basis, the internal relationship among the output power, flow resistance and structural parameters of the cooling system has been studied, and then the parameters of cooling system has been multi-objectives optimized. On the premise of meeting the pressure loss of the cooling system, the heat transfer efficiency has been improved, and then the output power of the motor has been increased.
Fuzzy adaptive sliding mode control of PMSM based on extended state observer
Authors: Yao Wang , Hai Tao Yu , Rong Guo , Dong Yang Li , Ningjun Feng , Zheng Xu
Published: December 2019

An extended state observer (ESO) based fuzzy adaptive sliding mode control (FASMC) for permanent magnet synchronous motor (PMSM) drive system is proposed in this paper. In order to improve the disturbance rejection property, a dynamic disturbance compensation method is developed based on extended state observer. A fuzzy adaptive sliding mode control method with a novel sliding mode reaching law is presented to enhance the tracking performance. Then, the proposed method called FASMC-ESO, is applied to regulate the speed of PMSM. The global asymptotic stability analysis of the system is proved by Lyapunov functions. Comparative simulation and experiment results verify the effectiveness of the proposed method.
Loss and temperature rise of the skin effect electric heat tracing system
Authors: Ding Li , Zhang Jiasheng , Lin Aiguo , Ge Yulei
Published: December 2019

In actual operation, the skin effect electric heat tracing system is powered by the inverter circuit, and the higher harmonic components are inevitably introduced. There is not much research on the influence of harmonic current on the electric heat tracing load loss. In this paper, the harmonic distribution under PWM driving mode is analyzed, and the load loss of the electric heat tracing body under harmonic current is derived. The co-simulation method of PWM inverter circuit and skin electric heat tracing body coupling is proposed. The simulation results of current and loss of co-simulation method and sine wave driving method are compared. The results show that the parameters of PWM driving mode increase to different degrees, which proves the correctness of the joint simulation method. At the same time, the influence of the output characteristics and modulation parameters of the PWM inverter circuit on the load loss of the electric heat tracing body is analyzed, which provides a theoretical basis for the determination of the parameters of the inverter circuit. In addition, combined with multi-physics coupling analysis, this paper obtains more accurate temperature distribution results of the electric heat tracing system without scaling the size of the electric heat tracing ontology. Not only can we intuitively understand the material selection and hot spot configuration of the electric heat tracing components, but also further understand the influence of current harmonics on the load loss in actual operation, so as to better realize the efficient heat tracing of the skin electric heat tracing system.
Displacement sensorless control for bearingless induction motor drives based on the MRAS method
Authors: Li Ke , Ling Feng , Sun Xiaodong , Cai Yingfeng , Zhao Dean , Yang Zebin
Published: December 2019

The traditional displacement sensors used in the bearingless induction motors (BIM) have many disadvantages, such as high cost, poor temperature stability, low conversion efficiency and complex motor operation. To improve these disadvantages, the detailed study on the novel displacement sensorless control based on the model reference adaptive system (MRAS) is presented in this paper. Firstly, the principle of radial suspension force generation and the mathematical model of the BIM are introduced. Secondly, the basic structure of the proposed MRAS is constructed and the stability is verified by the Popov’s integral inequality. Thirdly, to improve the control accuracy and dynamic characteristics of sensorless vector control system, a method of directly controlling rotor eccentric displacement by using suspension force compensation is proposed. Finally, the feasibility and accuracy of the proposed method have been verified by the simulation and experimental results. According to the results obtained, the radial displacement of the rotor can be accurately estimated, and the rotor displacement sensorless control of the BIM based on MRAS is achieved.
Gestational diabetes mellitus: Prevention, diagnosis and treatment. A fresh look to a busy corner
Authors: Zito G. , Della Corte L. , Giampaolino P. , Terzic M. , Terzic S. , Di Guardo F. , Ricci G. , Della Pietà I. , Maso G. , Garzon S.
Published: December 2019

BACKGROUND: Gestational diabetes mellitus (GDM) is a common pregnancy complication characterized by hyperglycaemia with onset or first recognition during pregnancy. Risk factors include family history of diabetes, previous GDM, genetic predisposition for GDM/type 2 diabetes, insulin resistance conditions such as overweight, obesity and ethnicity. Women with GDM are at high risk for fetal macrosomia, small for gestational age, neonatal hypoglycaemia, operative delivery and caesarean delivery. The aim of this narrative review is to summarize the most recent findings of diagnosis and treatment of GDM in order to underline the importance to promote adequate prevention of this disease, especially through lifestyle interventions such as diet and physical activity. METHODS: The research was conducted using the following electronic databases, MEDLINE, EMBASE, Web of Science, Scopus, ClinicalTrial.gov, OVID and Cochrane Library, including all published randomized and non-randomized studies as well as narrative and systematic reviews. RESULTS: The lack of universally accepted criteria makes the definition of diagnosis and prognosis of this condition difficult. Early diagnosis and glucose blood level control may improve maternal and fetal short and long-term outcomes. Treatment strategies include nutritional interventions and exercise. Medical treatment can be necessary if these strategies are not effective. Moreover, novel non-pharmacologic agents such as myo-inositol seem to be effective and safe both in the prevention and the treatment of GDM. CONCLUSIONS: It is important to promote adequate prevention of GDM. Further studies are needed in order to better define the most appropriate strategies for the clinical management of women affected by GDM.
Characterization of the intensive care unit (ICU) admissions in the Benue State University Teaching Hospital.
Authors: Efu Michael Enokela , Ojo Babarinde , Eke Barnabas Agaba , Anefu Gabriel Okpotu , Ozoagu Martha Amaka
Published: December 2019

Today, intensive care units (ICUs) of most hospitals in developed countries have become separate departments staffed by career intensive care physicians or intensivists from various fields of medicine. In Nigeria, however, ICUs are still part of the anaesthesia department and critical care constitutes a significant part of the workload and responsibilities of anesthetists. This study was carried out to ascertain the types of disease conditions that were brought into the ICU for management at the Benue State University Teaching Hospital (BSUTH), interventions undertaken as well as the outcome of such admissions. A total of 125 patients were evaluated. The age bracket between 21 and 30 years recorded the highest figure of 28 accounting for 22.4% of the study population. This was followed by the age bracket between 31 and 40 years with 24 representing 19.2%. The study population was made up of 81 males and 44 females making up 64.8% and 35.2%, respectively. The most frequent conditions occasioning ICU admissions are post laparotomy (24.8%), head injury (18.4%), and burns (11.2%). A total of 289 interventions in various combinations were carried out on these patients. Of these, monitoring of the patients was undertaken 106 times, representing 36.7%. Oxygen therapy followed closely with 102 (35.3%). The lowest number of days spent by patients in the ICU in this study, was 1, while the longest was 35 with a mean of 5.97 days ± 7.76 days. Majority of the patients, 68, were discharged from the ICU to the wards making up 54.4% of the study population. This was closely followed by those that died, 50, accounting for 40.0% of the study population. This study has established that in our ICU, the most common indications for admission were post-laparotomy, head injury and burns. Also, it has been observed that most of the patients underwent haemodynamic monitoring and oxygen therapy. Finally, while most patients admitted were discharged to the wards, a good number also died in the ICU.
Bilateral canine space infection secondary to odontogenic origin. A rare case report.
Authors: Gawande Mayur Janardan , Gupta Mithilesh Kumar , Goel Manu
Published: December 2019

Odontogenic infections (OI) are a major reason for consultation in dental practice. They affect people of all ages, and most of them respond well to current medical and surgical treatments. The aim of this paper is to emphasize different and rare etiological factors that can play a role in odontogenic abscesses, which can lead to complications. A 54-year-old man complaints of pain and swelling on the upper front-side of his face. Physical examination of the face showed enlargement and swelling in the upper front region. Panoramic radiograph images showed a radiolucent appearance of the canine region. Based on the results of the clinical and radiographic examinations, the patient was diagnosed with a bilateral canine space infection. The treatment performed was FNAC (Fine neddle aspiration cytology) from canine region followed by intraoral drainage incision at the most prominent part of swelling (Modified Hiltons method), 5 ml of pus was removed, postoperative dressing was applied and regular follow-up was done with continued antibiotic therapy. Bilateral canine space abscess is a rare odontogenic infection that can cause life-threatening complications. The success of treatment requires early recognition, determination of etiological factors, and appropriate medical and surgical management. To perform treatment of odontogenic infections, the Oral & Maxillofacial Surgeon should understand the terminology regarding infectious diseases and pathophysiology. The success of treatment requires early recognition, determination of etiological factors, and appropriate medical and surgical management.
Chemical constituents of the ethyl acetate extract from the leaf of mugwort (Artemisia vulgaris L.)
Authors: Nguyen Thien Truong Van , Phan Thien Tai , Phan Tung Thanh , Kim Thi Tran Lien , Tiet Thi Tran Nhu , Hoang Dang Phu , Nguyen Linh Phi , Ton Quang That
Published: December 2019

Introduction: Mugwort (Artemisia vulgaris L.) is a familiar herbal medicine and also a daily vegetable. It is one of the ingredients in the famous remedy "Cao ích mẫu" specializing in menstrual disorders or the omelet with mugwort that helps save blood flow to the brain to treat headaches. In both traditional medicine and the new drugs, diseases are usually treated by mugwort as diabetes, epilepsy combination for psychoneurosis, depression, irritability, insomnia, anxiety, and stress. To demonstrate the medicinal uses, the chemical constituents of this herbal were continually studied.

Methods: The leaves of mugwort were collected in Ba Ria - Vung Tau province, Vietnam. The plant was identified by the late pharmacist and botanist Binh Duc Phan. A voucher specimen (AV001) was deposited in the herbarium of the Department of Organic Chemistry, VNUHCM–University of Science. Dried leaf powder of A. vulgaris (11 kg) was extracted with methanol and evaporated under reduced pressure to give a methanol extract (910 g), which was dissolved in methanol-water (1:9) and then successively partitioned with petroleum ether, chloroform, and ethyl acetate. From the previously researched ethyl acetate fraction, nine compounds were isolated: six known phenolic compounds (luteolin, 6-methoxyluteolin, eupatilin, o-coumaric acid, vanillic acid, and protocatechuic acid), sinapyl alcohol diisovalerate, vulgarin, and one new compound (artanoic acid).

Results: In this research, ethyl acetate fraction was also studied. From subfraction EA4, six compounds were isolated by three skeletons: phenolic compounds (5,4′ -dihydroxyflavone and 4-hydroxyphenyl acetate), phenyl propanoid (methyl 2-O-b -D-glucopyranosylcoumarate and 2-O-b -D-glucopyranosylcoumaric acid) and uracil (5-methyluracil and uridine). The structure of the isolated compounds was determined to base on 1D, 2D NMR spectra, HR-ESI-MS, and comparison with published data.

Conclusion: Particularly, four compounds (methyl 2-O-b -D-glucopyranosylcoumarate, 2-O-b -D-glucopyranosylcoumaric acid, 5-methyluracil, and uridine) were known for the first time from this species.
Ekstrak daun sukun sebagai inhibitor alami penghambat korosi pada kawat stainless steel
Authors: Rifky Mirna
Published: December 2019

Pemakaian Kawat stainless steel pada bidang kedokteran gigi cukup banyak digunakan, terutama untuk perawatan di bidang ortodonsi dan prostodonsi yang  menggunakan kawat stainless steel. Rongga mulut merupakan lingkungan yang sangat ideal untuk terjadinya korosi, yang dapat disebabkan oleh saliva. Pencegahan  korosi  pada kawat stainless steel dapat dilakukan dengan memakai inhibitor korosi yang bersifat organik maupun   non organik.Salah satu inhibitor organik yang dapat digunakan untuk mencegah korosi adalah daun sukun. Metode yang digunakan untuk penelitian ini menggunakan alat uji Atomic Absorption Spectrophometric. Hasil penelitian menunjukkan adanya perbedaan pelepasan ion kromium pada perendaman dalam saliva dan ekstrak daun sukun pada hari ke 1, 3, 7 dan 14. Perhitungan statistik dengan uji Independent T-test 0,000 dengan p<0,05 menunjukkan hasil perbedaan yang bermakna.  Kesimpulan dari penelitian ini menunjukkan bahwa ekstrak daun sukun dapat menghambat laju korosi kawat stainless steel.
EDITORIAL
Authors: Redaksi Jurnal Nfn Timm
Published: December 2019

editorial
A difference between sexes: temporal variation in the diet of Carollia perspicillata (Chiroptera, Phyllostomidae) at the Macaregua cave, Santander (Colombia)
Authors: Alviz A. , Pérez-Torres J.
Published: December 2019

Organisms adjust their foraging strategies to optimize the energetic costs during foraging with respect to benefits gained. These strategies are usually different in males and females due to their specific requirements during reproduction. Knowing the temporal dietary composition and variation may help us understand how intrinsic factors can influence diet during the breeding season. Seba’s short–tailed fruit bat (Carollia perspicillata) plays an important role in seed dispersal throughout the Neotropics. Seasonal dietary changes related to resource availability have been documented but dietary differences between males and females have not been analyzed. We tested the hypothesis that dietary breadth increases and varies between males and females of Carollia perspicillata during the breeding season. We collected 295 fecal samples (from 236 males and 182 females) between June 2012 and April 2013 at the Macaregua cave (Santander, Colombia). Sex, diet and overlap were recorded. Time series analysis of dietary variation were estimated and related to food (fruits and flowers) availability. Males were found to include 18 seed morphospecies within their diet, while females included 16 seed morphospecies. Ficus, Vismia and Acacia were the most commonly consumed plant genera within the diet of both males and females. The time series analysis throughout the year indicated that males had greater dietary diversity than females. Dietary richness for males peaked multiple times, while dietary richness for females peaked only once during the transition period between pregnancy and lactation. We recorded significant sex differences in the value of importance of plants in the diet, evenness, and dominance of plant species consumed, as well as differential consumption over the seasons. Knowing the variations in the diet allows us to address the differences between the foraging strategies that females and males use in response to energy demands, movement patterns and habitat use. This is essential to understand all those processes that organisms must carry out for their survival and maintenance.
The Influence of Academic Culture and Task Commitment Toward Lecturers’ Innovativeness
Authors: Chairunnisa Connie , Kosasih Ahmad
Published: December 2019

This study aims to investigate the academic culture and task commitment toward lecturers’ innovativeness. Quantitative survey methods were adopted. To collecting the data, a questionnaire and path analysis were used. Two hundred fifteen lecturers at several universities in Jakarta (Indonesia) participated in the study. The results indicate that many academic cultures positively give direct influences to lecturers’ innovativeness, and task commitment positively gives direct influences to lecturers’ innovativeness. The study concludes that training and mastery of the use of media are needed to improve the competence and innovation of lecturers in conducting scientific research.
Ensino das crianças surdas-mudas portuguesas: Contributos histórico-educativos (Séc. XIX e princípios do XX)
Authors: Martins Ernesto Candeias
Published: December 2019

Analisaremos de forma hermenêutica, entre o séc. XIX e princípios do XX, o trato e ensino das crianças dos surdos-mudos em Portugal, na base de documentos, arquivos, imprensa e fontes primárias e secundárias. Incidiremos nossa análise nas ações e discursos dos pedagogos, que promoveram essa educação especial e pedagogia diferenciada, desenvolvendo métodos, criando aulas/classes, estabelecimentos de ensino com o apoio de Misericórdias, municípios, de filantropos/beneméritos. O estudo está estruturado nos seguintes pontos: atenção aos surdos-mudos e cegos, com o desenvolvimento de métodos adequados; Real Instituto de Surdos-Mudos e Cegos e a sua pedagogia de ensino; contributos de outras instituições ao ensino desses coletivos; a metodologia de ensino e as principais caraterísticas na aprendizagem desses menores com deficiências sensoriais. Muitas destas crianças e jovens surdos-mudos conseguiram aprender um ofício que permitiram inserir-se no mercado de trabalho e na sociedade da época.
PROPOSTA DE PROGRAMA DE AJUSTE NEUROFUNCIONAL PARA A APRENDIZAGEM MATEMÁTICA
Authors: Fonseca Laerte Silva da , Silva Kleyfton Soares da
Published: December 2019

Este trabalho teve como objetivo analisar o desempenho de estudantes do Ensino Médio Integrado de uma Instituição de Ensino Pública Federal quanto à aprendizagem de noções de trigonometria. Tratou-se de uma pesquisa qualitativa de cunho experimental conduzida em três estágios: análise prévia, intervenção e avaliação. A fundamentação teórica compreendeu principalmente as noções de Níveis de Funcionamento do Conhecimento, que serviu para delinear as tarefas matemáticas, e os princípios neurocognitivos associados à emoção (motivação), atenção e memória para a organização do contexto das terefas. Considerou-se conceber e aplicar um conjunto de tarefas ecológicas, funcionais e didáticas – denominado programa de ajuste neurofuncional – para avaliar o desempenho dos estudantes em matemática, antes e após a intervenção. Foi possível concluir que houve aumento do desempenho dos estudantes quando as condições de aprendizagem valorizou princípios neuroeducativos relativos à emoção, atenção e memória, considerados durante a elaboração das tarefas.
PEDAGOGIA AFROCENTRADA EM PRÁTICAS EDUCATIVAS DE PROFESSORAS AFRODESCENDENTES UNIVERSITÁRIAS
Authors: Padilha Glaucia Santana Silva , Machado Raimunda Nonata da Silva
Published: December 2019

O estudo sobre Práticas educativas de professoras afrodescendentes no magistério superior da Universidade Federal do Maranhão (UFMA) tem o propósito de averiguar se as práticas educativas das professoras afrodescendentes, da UFMA, estão, de alguma forma, permeadas por princípios da afrocentricidade, que concebem as/os africanas/os e as/os afrodescendentes, nas diásporas, como agentes de sua própria cultura e história, conforme seus interesses. Sustenta-se nas perspectivas teórico-metodológicas da História Nova e da decolonialidade, por valorizar o ponto de vista de grupos historicamente subalternizados. Procede a uma revisão de literatura sobre princípios afrocêntricos, ao mesmo tempo em que faz uso da análise documental e entrevistas semiestruturadas, visando a elaboração de narrativas, a partir dos relatos das professoras partícipes da pesquisa. Destaca como principais resultados os desafios de produzir narrativas que revelem princípios da proposta epistemológica da afrocentricidade nas práticas educativas das professoras afrodescendentes universitárias, concluindo que, estas, são docentes afrocentristas, tendo em vista suas atitudes epistêmicas endereçadas à desconstrução de linguagens estereotipadas, dos racismos e, sobretudo, ao conhecimento do mundo africano, tentando elaborar novas narrativas de valorização e reconhecimento de sua cultura e história. Com isso, realizam um movimento dentro do território epistêmico afrocentrado, mediante sua posição em lugares sociais que não lhes foram destinados, segundo a lógica ocidental. Esta presença subversiva na universidade as tornam protagonistas da construção de novas pedagogias, uma Pedagogia Afrocentrada.
JOGO E IMPROVISAÇÃO NA PESQUISA-DOCÊNCIA: SOBRE ESTUDOS EM EXERCÍCIOS
Authors: Esteves Diego Winck , Adó Máximo Daniel Lamela
Published: December 2019

Este ensaio perspectiva a pesquisa e a docência por meio de uma noção de exercícios que tem em vista a necessidade de colocar-se em jogo enquanto pesquisador e docente, para que a pesquisa-docência — noção que então assume uma reciprocidade — seja incitada a lidar com o imprevisível e as provisoriedades de seu fazer. Tal noção de Exercícios é tratada por uma via foucaultiana, onde o sujeito pesquisador é posto à prova, pois somente assim teria acesso à verdade. Com efeito, a própria noção de verdade passa a ser perspectivada, pois, assim como nos propõe Nietzsche, tem-se como pressuposto o fundo trágico da existência, ou seja, o não-sentido sobre o qual se produz os sentidos e funções do e no pesquisar. Afirma-se, portanto, o caráter improvável deste fazer — tanto da escrita da pesquisa quanto do pesquisador-docente que escreve, ele mesmo em jogo —, e a improvisação emerge enquanto acontecimento imprevisto no qual o estudo e o próprio indivíduo, que flexiona-se sobre ele, passam por processos intermitentes de individuação. Assim posto, o próprio texto aqui apresentado se constitui em zonas incertas, põe-se em risco: compreende-se em entremeios onde se exercita tendo em vista a proposição de certa noção composta entre jogo e improviso. Propõe-se, com efeito, que certos exercícios, enquanto jogos inventados como condição para improvisações, possam ser apropriados como um modo possível, e potente, de lidar com a pesquisa e a docência.
Sumário
Authors: Nuances Editor
Published: December 2019

Sumário v.30, n.1
The Causes and Effects of Earnings Management on Stock Prices
Authors: Wali Kawa , Saleh Sabhi , Van Paridon Kees
Published: December 2019

This study uses the performance of the discretionary estimation models by using a sample of listed companies in the Netherlands and Germany. The actual accounting framework provides a wide opportunity for managers to influence data in financial reporting. The corporate reporting strategy, the way managers use their discretionary accounting, has a significant effect on the company's financial reporting. The authors contribute to the literature through enhancement to these models to accomplish better effects of identifying earnings management as well as to present evidence that is particular to the Dutch and German setting.

For this, we followed the methodology of Dechow, Sloan, and Sweeney (1995) and Chan et al. (2006) and test which model can detect Dutch and German firm’s earnings management better by applying those models to the artificially manipulated earnings after adding some amount to the reported earnings.

This investigation found that earnings are managed relatively more in Germany than in the Netherlands. The relationship between earnings management, stock returns, and corporate governance has been tested. Our results suggested that the strong or weak impact of corporate governance in these two countries varied. The multi-sectoral Jones model has a modest illustrative capacity.

Finally, the results show that maximum discretionary accruals involve a large number of estimated errors which have foreseeable effect on income, stock returns and future cash flows. The decrease in level of earnings management indicates that the measurement error has been largely eliminated in the estimated performance -related accruals.
The Impact of Emotional Intelligence on Employee Performance in Saudi Arabia Banking Sector
Authors: Serhan Amira , Gazzaz Heba
Published: December 2019

Saudi Arabia’s banking sector plays an important role in the country’s development as it is among the leading sectors in the financial sector. Considering, two main Saudi banks (The National Commercial Bank and Saudi American bank), the present study aims to observe the impact of emotional intelligence on employee performance. The components of emotional intelligence affecting employee performance include self-management, relationship management, self-awareness, and social awareness. A quantitative methodology was applied to analyse the survey results of 300 respondents over the period from 2018 to 2019. The results show that there was a significant positive impact of self-management, self-awareness, and relationship management on employee performance. However, in the Saudi banking sector, there was no impact on social awareness on employee performance.
Prevent administrative and financial corruption behaviors by activating the functions of the organizational immunity system
Authors: Abbas Ali Abdulhassan
Published: December 2019

The current research aims at testing the relationship between organizational immunity and preventing administrative and financial corruption (AFC) in Iraq. The Statistical Package for the Social Sciences program (R& SPSS) was used to analyse the associated questionnaire data. The research problem has examined how to activate the functions of the organizational immune system to enable it to face organizational risks, attempt to prevent administrative and financial corruption, and access the mechanisms by which to develop organizational immunity. A sample of 161 individuals was taken who worked in the Directorate General of Education, Karbala. Also, it was concluded to a lack of memory function for organizational immunity. In addition, the influence relationships for a number of organizational immunity dimensions were weak. So, I have made several recommendations to tackle this problem. Similarly, the organization should also develop strategies to develop its organizational immunity and combat administrative and financial corruption. And then, it will be indicated to these strategies in detail at the research.
Quantifying postharvest loss of brinjal: A farm level study in Bangladesh
Authors: Khatun Mashrufah , Rahman Muhammad Shahrukh
Published: December 2019

Brinjal (Eggplant) is a very common and popular horticultural crop in Bangladesh. This study reports on quantification of farm level postharvest loss of brinjal in two intensive growing districts Jamalpur and Rangpur of Bangladesh. It also outlines the determinants of brinjal postharvest loss and problems of brinjal farmers. A total of 144 farmers were considered for the study from purposively selected four villages. Total postharvest loss was quantified by evaluating quantitative and qualitative losses of brinjal. Farmers were found well acquainted with a range of postharvest practices such as definite point and stage of brinjal harvesting, sorting, grading and packaging. Morning was the most preferred time for harvesting and selling of brinjal in the survey areas. Distance selling and motor driving van for local selling were used by 25% and 23% of the respondents. Physical damage and physical appearance were the two basic criteria for grading of brinjal at farm level. Among the problems, absence of storage and lower prices of brinjal scored highest PFI 208 and 181, respectively from the possible range of 0 to 216. Farm level postharvest loss of brinjal was 13.90% of total production where full damages accounts for 9.16% alone. Infested by insect and rotten were the primary causes of full damages of brinjal in the survey area. The 4.73% of the total postharvest loss was due to partial damages of brinjal where skinning and bruising constitutes the maximum share. Due to postharvest loss brinjal farmers have to incur financial loss of Tk. 709.05 per decimal of brinjal cultivation. Total harvested amount, farmer’s education, packaging and selling place were found significant factors for postharvest loss of brinjal in the survey area. It is recommended that government, research institution and Department of Agricultural Extension (DAE) should work jointly to educate farmers against postharvest loss of brinjal in Bangladesh.

J Bangladesh Agril Univ 17(4): 454–460, 2019
Pemahaman Mahasiswa tentang Hakikat Sains dalam Pembelajaran menggunakan Model Pembelajaran Mobile-NOS
Authors: Khery Yusran , Nufida Baiq Asma , Suryati S. , Rahayu Sri , Aini Miftahul
Published: December 2019

[Title: Students' Understanding of the Nature of Science in Learning using the Mobile-NOS Learning Model]. This research aimed to evaluate the influence of the Mobile-NOS model of learning application towards Students' Understanding of the Nature of Science. In the form of pre-experimental research, this study has been carried out by pretest-posttest non-control group design. The research subjects consisted of 27 students participating in the Basic Chemistry II course in the chemical education program of IKIP Mataram Academic Year 2018/2019 collected by saturated sampling. The Nature of Science data was obtained using the Understanding of Nature of Science questionnaire that consists of 39 valid items with very high reliability (r = 0.802) proved by test result to 84 subjects. A paired sample t-test used to analyze the data obtained. The results showed significant enhancement on students' understanding of the nature of science after the Mobile-NOS model of the learning implementation. The value of t count (5.353) is higher than the t table (1.706) in the one-way hypothesis. Based on the results of the study, it can be concluded that the Mobile-NOS learning model influences students' understanding of the nature of science.
WORKERS' RIGHT TO HEALTH AS A RIGHT TO WELL-BEING
Authors: D'Andrea Antonella
Published: December 2019

Work and well-being are closely related since the quality of working conditions and prospects have a direct impact on the individual's level of well-being. Economic development must necessarily consider the well-being dimension, because of its direct connection with productivity and competitiveness. The first commitment to achieving a global well-being strategy was made taken by the World Health Organization, but the same principles can be to be found in the social rights pillar of the European Union. In Italy in any case, the Constitution of 1948 already establishes the pursuit of the full development of the human person and, in it, establishing the right to health, understood as a state of psychophysical well-being. Actually, in the digital society, the worker enabled to work from any place and at any time thanks to technological devices, enjoys a greater autonomy in their working activity. However, the intensive use of new technologies is likely to have ambiguous and even contradictory effects.
The Production of Mozzarella Cheese from Goat Curd
Authors: MAXHUNI Prof. Asoc. Dr. Shurki , GJOKAJ Prof. Asiss. Dr. Ekrem
Published: December 2019

The quality of curd is of crucial importance when it comes to cheese production because it directly affects the quality of the final product. This research paper analyzes the financial benefits of producing curd from non-standardized goat milk with 4.44% fat. The Chemical examinations of the used curds adhered to international standards and methods. A total of three experiments were conducted in which for each individual experiment, 500 L of goat milk was used to produce curd that served as a base for the production of mozzarella cheese. Out of these experiments, 48 samples were taken from the milk that was used and another 48 samples were taken from the curd that was produced in order to further analyze and compare their chemical composition. We concluded that it is more financially profitable to use standardized milk with 3.2% fat for curd and cheese production, than using non-standardized milk with 4.44% fat for the same purpose.
Implementation of Guided Group Academic Writing Using Online Learning Tools
Authors: BIN AHMAD KHIRI MUHAMMAD JAZLAN
Published: December 2019

Writing is an important skill necessary for students pursuing a higher level of education. The challenge for second language learners would be to write accurate academic essays as required by the course for students that has been aligned to the Common European Framework (CEFR) B1 standard since 2015 at a public institution of higher learning. The academic English course offered at a public institution of higher learning was subjected to a guided academic writing using online tools by Harju and Åkerblom (2017) description of the teacher’s role in facilitating learning to achieve the intended learning outcome which is to write an academic essay focusing on its features. The participants in this study were second year undergraduates in the second semester of their study who struggled to write an essay early in the semester.  This study used a quantitative analysis collected from 10 participating students (n=10). The results found that the students made improvements to the feature of their essay and their feedback of the intervention were processed using frequency analysis indicated a hundred percent preference of the students to learn by their own discretion guided by the instructor and supported with online learning tools.