bluuebunny/crossref_metadata_2025 huggingface dataset:
Management of Lytic Bone Disease in Lymphoplasmacytic Lymphoma: A Case Report and Review of the Literature
Authors: Baksh Mizba , Jiang Liuyan , Bhatia Unnati , Alegria Victoria , Sher Taimur , Roy Vivek , Chanan-Khan Asher , Ailawadhi Sikander , Parrondo Ricardo
Published: July 2021

Waldenström Macroglobulinemia (WM)/lymphoplasmacytic lymphoma (LPL) is
often differentiated from myeloma based on the presence of lytic bone
lesions (LBL). However, WM/LPL can present with LBL and management is
poorly understood. We describe a case of an 81-year-old woman with LPL
who presented with LBL and was successfully treated with
chemoimmunotherapy.
Efficacy of Long Term Indomethacin Therapy in Prolonging Pregnancy After Fetoscopic Laser Surgery for Twin-to-Twin Transfusion Syndrome: a Collaborative Cohort Study
Authors: Mustafa Hiba , Krispin Eyal , Tadbiri Hooman , Espinoza Jimmy , Shamshirsaz Alireza , Nassr Ahmed , Donepudi Roopali , EDITOR) Michael Belfort (FETAL MEDICINE ISSUE , Cortes Magdalena Sanz , Pedersen Nicole , Harman Christopher , Turan Ozhan
Published: July 2021

Objective: To evaluate the efficacy of long-term indomethacin therapy
(LIT) in prolonging pregnancy and reducing spontaneous preterm birth
(PTB) in patients undergoing fetoscopic laser surgery (FLS) for the
management of twin-to-twin transfusion syndrome (TTTS). Design:
Retrospective cohort study of prospectively collected data. Setting:
Collaborative multicenter study Population: 557 consecutive TTTS cases
that underwent FLS Methods: LIT was defined as indomethacin use for at
least 48 hours. Log-binomial regression was used to estimate the
relative risk (RR) of PTB in LIT compared to non-LIT group. Cox
regression was used to evaluate the association between LIT use and
FLS-to-delivery survival. Main outcome measures: gestational age (GA) at
delivery Results: Among the 411 pregnancies included, a total of 180
patients (43.8%) received LIT after FLS and 231 patients (56.2%) did
not. Median GA at fetal intervention did not differ between groups (20.4
weeks). Median GA at delivery was significantly higher in the LIT group
(33.6 weeks) compared to the non-LIT group (31.1weeks),
p<0.001. FLS-to-delivery interval was significantly longer in
the LIT group (P<0.001). The risk of PTB prior to 34, 32, 28,
and 26 weeks gestation were all significantly lower in the LIT group
compared to the non-LIT group (RR=0.69, 0.51, 0.37, and 0.18,
respectively). The number needed to treat (NNT) with LIT to prevent one
PTB<32 weeks gestation was 4, and to prevent one
PTB<34 weeks was 5. Conclusion: Long-term indomethacin after
FLS for TTTS was found to be associated with prolongation of pregnancy
and reducing the risk for PTB.
Querying the value of indiscriminate iron supplementation in pre-eclampsia: a cross-sectional study
Authors: Dorsamy Vinogrin , Bagwandeen Chauntelle , Moodley J
Published: July 2021

Objective To determine the prevalence and type of anaemia and its
association with pre-eclampsia (PE) in pregnant South Africans of
African ancestry. Design Cross-sectional study design Setting A regional
hospital in KwaZulu-Natal, South Africa. Sample 671 women seeking
antenatal care. Methods Participants had haemoglobin(Hb), anthropometric
measurements, HIV status, blood pressure levels(BP) and proteinuria
measured to determine PE. Iron studies and transferrin receptor levels
were assessed in a subset and chi-square tests of association between
normotensive and pre-eclampsia sub-groups and blood parameters were
conducted. Results No difference in Hb concentration amongst the 4
groups (F (3,621)=0.981, p< .001, η2=.014) was observed. A
chi-square test of association (χ2(3)=6.674, p=.083) showed no
associations between study groups and having anaemia. The severity of
anaemia did not vary amongst study groups (χ2(12) =10.756, p=.550).
Using ferritin, there was an association between the study groups having
an iron deficiency, anaemia, both or neither (χ2(3)=12.559, p=.045) with
a positive association between normotensive term and iron deficiency
(adjusted residual(AR) 2.2) and positive association between early-onset
PE(AR 2.4). Similar trends were found for transferrin and soluble
transferrin receptor ferritin index. Twenty-two percent of the
participants were not iron deficient. Conclusion Early-onset PE is
associated with high iron status and not anaemia. Normotensive term
pregnancies were associated with iron deficiency anaemia. Broad iron
supplementation without adequate determination of iron deficiency in
pregnant women needs to be revisited. Funding National Research
Foundation (TTK170508230162), University of KwaZulu-Natal UCPD and
Medical Research Council of South Africa(SIR Grant UNS14197). Keywords
Anaemia, iron deficiency, pre-eclampsia
Hybrid Surgical Repair for Recurrent Coarctation of the Transvers Arch: Case Report
Authors: ATILGAN Kıvanc , TOSYA Alper , YEŞİL Fahri , Coskun Pinar Koksal , ONUK Burak , Aybek Tayfun
Published: July 2021

The incidence of postoperative recurrent coarctation of the aorta ranges
from 5% to 50%, and largely depends on the age at initial repair. Due
to the increased fibrosity and rigidity of the aorta in older age, stent
placement is preferred instead of balloon angioplasty, resulting in an
almost complete relief of the gradient in >95% of the
patients. In patients with transverse arch hypoplasia, transcatheter
intervention with further surgical intervention may be needed, and the
use of stenting was shown to be effective in the treatment of patients
with hypoplastic isthmus, arch or tubular coarctation. In this case of a
late re-coarctation, we preferred to apply a hybrid technique for
treatment. The first step of the treatment was debranching of the
brachiocephalic and left common carotid arteries with upper mini median
sternotomy. On the following day, the patient underwent a successful
stent placement to the transvers arch.
Self-Destructive Work Behavior Management for Socio-Economic Emancipation: A Classic Case of Saving One from Oneself
Authors: Ugwuzor Miebi
Published: July 2021

Africa is amply endowed with diverse dimensions of resources as well as having a rich cultural heritage with great potentials for economic growth and development. It is also worthy of mention that the resourceful capacities of Africans in the diaspora in all spheres of life have contributed immensely to the development of other continents of the world. Despite these great progressive potentials, a large percentage of African States are in obvious and dire need of sustainable socio-economic emancipation. This glaring need to identify the key challenges and propose solutions necessitated this study. This study is conceptual and examined self-destructive behaviors at multiple levels using theoretical underpinnings from the Human survival and the self-destruction paradox as well as the dialectical behavioral therapy. This Paper identified several ingrained sources of self-destructive work behaviors in contemporary public sector workplaces in Africa which contribute to the socio-economic challenges. This work highlights that these obnoxious, self–destructive work behaviors seem highly inimical to management praxis. The behaviors seem capable of contending against the aggregate fight for sustainable socio-economic emancipation of the Continent. Deliberate self-salvation was opined here to steer away behaviors, especially in workplaces, from this current path of self-destruction. Novel Actionable thoughts were suggested to stem this unfavorable tide and push for a generation of operational work behaviors as well as an ethical renaissance in management praxis for the emergence of archetypes completely devoid of any anti-progress tendencies.
Business Succession in Indian Family Businesses in South Africa
Authors: Mahomed Yaaser , Mtembu Vuyokazi
Published: July 2021

Family businesses play a pivotal role economically and socially in most countries. The study aimed to identify and understand the experiences of Indian family businesses in South Africa with regard to business succession. A quantitative research approach was used with data collected through Google forms online survey. Data was collected from sixty (60) business people from Indian-owned family businesses in South Africa. The study interrogated the following factors which have an influence on family business succession: business ownership influence in succession, business readiness for the exit of owner and succession, the role of the owner after exit from business and selection criteria of the right successor. Findings revealed that the majority of families (86.27%) said it is important to have a hundred percent or full ownership of the business and that a successor should be selected within the family from their bloodline. Findings also revealed that the majority of businesses (86.27%) were not fully ready for the exit of the owner or current leader of the business and that on the exit of the owner; a majority (90.2%) of businesses will prefer to have the owner playing an active advisory role in the business. It is recommended that family-owned businesses should plan for succession on time and draft a well-planned strategic succession plan for the business. It is also recommended that an objective criterion be used in selecting a successor who will take the business forward. Healthy business continuity should be the ultimate goal of succession and families should not sacrifice successful business continuity because of their, internal differences and conflict, culture, blood relations, gender or religion.
Money Illusion in Charitable Giving in the Absence of Market Price Resistance
Authors: Zumaeta Jorge N.
Published: July 2021

Money illusion occurs when individuals fail to differentiate nominal from real values when making financial and economic decisions. As a consequence, they do not adjust their consumption behavior according to real variables. We report an economic experiment to study whether money illusion appears in a very simple setting. It is very important to mention that the experiment was conducted in the context of charitable giving. Our experimental results showed the absence of money illusion among the participants. Our study suggests that money illusion is not present in the absence of price stickiness (market price resistance). This finding supports Shafir et al. (1997). The main objective of our study is to develop a better understanding of economic agents’ charitable giving behaviors as influenced by perceptions of nominal income. Charitable institutions could build fundraising strategies based on behavioral tendencies to the perception of income in nominal or real terms.
PRÁTICA DE SD DURANTE O ENSINO REMOTO: MARCAS DA VIOLÊNCIA CONTRA A MULHER EM CONTOS DE MARINA COLASANTI
Authors: Souza Damasceno Márcia de , Landgraf Valério Claudia Lucia , Matos de Magalhães Epaminondas
Published: July 2021

Este artigo tem como objetivo apresentar o trabalho realizado por meio de sequência didática (SD) sobre a violência contra a mulher nos contos de Marina Colasanti. A relevância do tema deve-se ao aumento de casos de violência doméstica no Brasil, em meio à Pandemia do Covid-19. O estudo resultou das reflexões acerca de um trabalho desenvolvido com a finalidade de possibilitar aprendizagens significativas que promovam transformações sociais, dentre elas a igualdade de gênero para, assim, reduzirmos a violência contra as mulheres.  Nessa acepção, o aporte teórico foi construído com as contribuições de autores que corroboram com as discussões aqui expostas, ancorados na proposta de uma SD, dispositivo metodológico para apropriação de práticas de linguagem configuradas em gêneros de textos, realizada com estudantes do Ensino Médio, na cidade de Barra do Garças-MT, em meio ao contexto de pandemia. Os resultados mostraram que houve uma mudança de percepção dos estudantes quanto ao gênero conto e a conscientização do papel da mulher na sociedade.
Evaluation of sustainable amenities management at restaurants sector in kurdistan region of iraq
Authors:   Cihan University-Erbil  Erbil, Kurdistan Region - Iraq, Massoudi Aram , AHMED MOHAMED ,   University of Mosul, Faculty of Business and Economics
Published: July 2021

Purpose – The topic of sustainability is becoming an essential and concerning issue for organizations in today's business environment. Especially in the food and restaurant industry. Sustainability emphases on satisfying the needs of the current period without conceding the capability of future consumers to meet their desires. Yet, an inclusive adoption of Sustainability is lagging in the restaurant and eatery industry in emerging market such as Kurdistan Region, Iraq. Therefore, this research focuses on the current practices of sustainable amenities in restaurants and lodging businesses in Kurdistan Region, Iraq. Design – The researchers conducted unstructured interview for the data collection from (10) restaurateurs managing and working in 5 luxurious restaurants and 5 fast-food ones Methodology – The restaurants selected were categorized as luxurious restaurants and fast food restaurants, the topics of the interviews were related to energy, waste and water. The data were analyzed by using frequency Approach – the main approach in data gathering was qualitative. The interview queries were taken from related articles and divided into 3 sections: awareness plan, strategic planning, and restaurants' criteria of SAM. A content analysis method was used to identify the trend from previously published literature. Findings – The result showed that luxurious restaurants do apply sustainability in their operations, while fast-food restaurants lag behind. Originality of the research –Finally, recommendations of this study can be of help to all restaurants in Kurdistan area by introducing a proper practice of sustainability to improve and develop their businesses to meet customers' needs and gain competitive advantages ahead of their competitors.
Exile of Women in Anita Raw Badami’s Can You Hear the Nightbird Call?
Authors: Sathishkumar K. , Saravanan Dr. V. K.
Published: July 2021

Anita Rau Badami is an Indo-Canadian writer who has written four exceptional novels. Her widely praised books are known for the honest portrayal of Indian families and solid disapproved of women. Woman exploitation is one of the disasters defying ladies everywhere throughout the world. This malice is additionally intensified in the event that they are put in precarious political social orders or occasions. Women being greatly defenceless are obvious objectives of any type of abuse, embarrassment, hardship and segregation. Segment writing investigates the sexual injury, sufferings and excruciating encounter of ladies amid and after the Partition. This from multiple points of view substantiates the way that imbalance of genders is neither a natural reality nor a perfect order yet a social develop. The paper deals with the exploitation of women and their horrible encounters through the viewpoint of a female in Anita Rau Badami’s in her novel Can You Hear the Nightbird Call? This novel focuses on the subject of the Partition of India and Pakistan.
NILAI MORAL DALAM NOVEL MERRY RIANA MIMPI SEJUTA DOLAR KARYA ALBERTHIENE ENDAH DAN IMPLIKASINYA TERHADAP PEMBELAJARAN BAHASA INDONESIA DI SMA
Authors: Sari Diah Amelia
Published: July 2021

Tujuan penelitian ini adalah untuk mendeskripsikan nilai moral yang terdapat dalam novel Merry Riana Mimpi Sejuta Dolar Karya Alberthiene Endah dan untuk mendeskripsikan implikasi terhadap pembelajaran bahasa Indonesia di SMA. Nilai moral ialah sesuatu atau suatu nilai yang berkaitan dengan pribadi seseorang masing-masing, seseorang yang membuat tingkah lakunya sendiri baik atau buruknya. Ada tiga jenis wujud nilai moral yaitu (1) hubungan manusia dengan diri sendiri, (2) hubungan manusia dengan manusia lain dalam lingkup sosial, dan (3) hubungan manusia dengan Tuhanya.Metode yang digunakan adalah metode deskriptif kualitatif. Sumber data yang digunakan dalam penelitian ini adalah novel Merry Riana Mimpi Sejuta Dolar Karya Alberthiene Endah. Wujud data yang digunakan berupa kata, frasa, dan kalimat yang menunjukan nilai moral dalam novel Merry Riana Mimpi Sejuta Dolar Karya Alberthiene Endah. Pengumpulan data menggunakan teknik baca dan teknik catat. Teknik analisis data penelitian ini menggunakan teknik analisis deskriptif kualitatif. Pada tahap penyajian digunakan metode informal. Hasil penelitian ini menunjukan bahwa nilai moral yang terdapat dalam novel Merry Riana Mimpi Sejuta Dolar Karya Alberthiene Endah menghasilkan data kutipan sebanyak 40 data. Hasil penelitian ini dapat dijadikan sebagai alternafif materi ajar di SMA dikarenakan isi yang terkandung di dalamnya sangat positif. Sifat-sifat positif itulah yang pantas dijadikan contoh bagi peserta didik.
REKONSTRUKSI MODEL PEMBELAJARAN CONCEPT SENTENCE DALAM PEMBELAJARAN MENULIS PUISI KELAS X MAN 1 MEDAN TAHUN PEMBELAJARAN 2019/2020
Authors: Ayumi Alfi Yalda , Daulay Sukma Nabilah , Naryatmojo Deby Luriawati , Haryadi Haryadi
Published: July 2021

Penelitian ini bertujuan untuk memodifikasi model pembelajaran concept sentence dalam pembelajaran menulis puisi. Metode yang digunakan peneliti adalah metode deskriptif kualitatif. Jenis penelitian ini tergolong dalam jenis penelitian kepustakaan dengan studi dokumen teks dan teknik pengumpulan data menggunakan teknik baca tulis berdasarkan penelitian sebelumnya .Berdasarkan hasil analisis data yang ditemukan oleh peneliti dapat disimpulkan bahwa model pembelajaran consept sentence dengan berbantuan media roll the can dalam pembelajaran menulis puisi dapat meningkatkan kemampuan peserta didik.
NILAI PENDIDIKAN KARAKTER DALAM NOVEL MAYSURI KARYA NADJIB KARTAPATI Z
Authors: Pratiwi Dian , Sabardila Atiqa
Published: July 2021

Penelitian ini bertujuan mendeskripsikan nilai Pendidikan karakter yang terdapat dalam novel Maysuri Karya Nadjib Kartapati Z serta memotivasi para pembaca dan mampu mengembangkan kompetensi siswa dalam memahami tokoh dalam novel. Penelitian ini menggunakan pendekatan kualitatif. Data yang dikumpulkan menggunakan Teknik membaca keseluruhan cerita dalam novel, kemudian mencari dan mengumpulkan data berupa kalimat yang terdapat dalam novel, setelah itu melakukan klasifikasi terhadap data yang sudah terkumpul dan menjelaskan data tersebut. Hasil penelitian menunjukan bahwa terdapat 12 nilai Pendidikan karakter dalam novel maysuri yaitu hidup sederhana,tanggung jawab,kasih sayang, berbakti kepada orangtua, rasa ingin tau,rajin,religious,peduli,jujur,empati, kreatif dan gemar membaca. Berdasarkan data yang ditemukan novel Maysuri karya Kartapati Z, cerita dalam novel Maysuri Kartapati Z ini dapat memotivasi pembaca dalam berperilaku dan bermasyarakat serta dapat membantu peserta didik untuk menjadikan bahan materi pembelajaran karya sastra Bahasa Indonesia utamanya dalam memahami unsur instrinsik  ekstrinsik dan unsur kebahasaan dalam novel ini, serta dapat mengembangkan kompetensi siswa dalam memahami suatu  karakter tertentu pada cerita serta dapat mengambil nilai Pendidikan karakter yang terkandung dalam novel karena dalam novel Maysuri karya Kartapati Z terdapat banyak nilai karakter yang dapat dijadikan contoh dalam lingkungan keluarga atau masyarakat serta mengembangkan kompetensi siswa dalam memahami karya sastra dalam suatu materi pembelajaran.
Teaching the political discourse in russian universities
Authors: Vorobyeva Anzhela , Fokina Maria
Published: July 2021

Nowadays there are great quantities of academic courses in which political discourse is being studied. The present paper analyzes the teaching of American political discourse in Russian academic areas as an actualization of the most important aspects of both the cultural features and the historical background of the USA influencing not only vocabulary but semantics as well. We have selected 5 speeches of the former and current presidents of the USA to analyze their way of speaking from the linguistic point of view. We confirmed the hypothesis that language cannot be learnt without country’ background, history and culture. Hence, we have implemented some exercises developing oral, writing, listening and reading skills. We have reckoned the individual features of our students as well as the field of their interests using a communicative approach. The following exercises are integrated in courses of English for political purposes in RUDN University.
Theory and methodology of teaching and upbringing by fields and levels of education (pedagogical sciences)
Authors: Novgorodtseva Tatiana Yurievna , Burdukovskaya Anna Valerievna , Ivanova Elena Nikolaevna , Pegasova Natalia Arnoldovna , Kuzmina Nadezhda Dmitrievna
Published: July 2021

The object of research is the process of choosing elements in the organization of distance learning. On the basis of the method, a tree of the hierarchy of the choice of distance learning elements was built; matrices of pairwise comparisons of distance learning elements for each of the criteria and a matrix of pair-wise comparison of criteria from the point of view of the importance of the goal are built; calculated the values of the utility functions for each element of distance learning; the interpretation of the results obtained was carried out. The proposed approach to substantiating the composition of distance learning elements is advisable to use in the development of work programs for disciplines, in the organization of the educational process both with partial use of distance learning elements, and in the development of distance learning courses in general.
Institutional analysis of forest governance after the implementation of Law Number 23/2014 in North Sumatra Province, Indonesia
Authors: Affandi Oding , Kartodihardjo Hariadi , Nugroho Bramasto , Ekawati Sulistya
Published: July 2021

After the implementation of Law Number 23/2014 on Regional Government in Indonesia, the authority for forest management rests with the central and provincial governments. This study aims to (1) assess forest governance performance after the implementation of this law, (2) analyse the institutional aspects of forest governance after the implementation of this law and (3) formulate strategies to strengthen forest governance institutions. This study finds that although Law Number 23/2014 has been implemented in North Sumatra Province, the forestry sector remains centralistic; the characteristics of forest resources have not changed (these continue to be common pool resources) and the behaviour of the actors lacks synergy. In this scenario, the performance of forest governance has not improved significantly, as indicated by the incomplete designation of forest areas; the number of Kesatuan Pengelolaan Hutan that have not implemented the Badan Layanan Umum Daerah scheme; the low rights of access and low forest utilisation by the community; and the slow service process for permits; however, the costs for obtaining permits are according to regulations. This is in line with the results of this study’s institutional analysis, which show that (1) the provincial jurisdiction boundaries have narrowed, given that only the central government has authority over the forestry planning sub-function and forestry supervision; (2) many central government regulations continue to be used in forest management, characterising the low aspect of provincial regional representation rules; and (3) despite clear forest ownership rights, there are claims from other stakeholders, which indicates the low legitimacy of the parties. This study suggests that forest governance performance can be improved by expanding the jurisdiction boundaries through the assistance task mechanism to the provincial government; ensuring provincial government participation in formulating forest policies; and increasing the status of forest permit holders and managers from claimants to proprietors.
A study on self-assessment of current language skills: The case of Turkish teachers of English
Authors: TUNABOYLU Oya , ÇALIŞKAN Tuğçe
Published: July 2021

As a consequence of increasing demand for learning a foreign language, the population of language teachers has increased. As English is the most preferred language all over the world, English language teachers have become a subject for examination. Given the fact the majority of the English language teachers around the world are nonnative speakers, their proficiency has become crucial. This study aimed at providing baseline data on self-assessment of Turkish teachers of English regarding their current proficiency in four language skills. Data for the study were collected through a three-part questionnaire based on CEFR C1 can-do statements. A total of 70 Turkish teachers of English working in state and private schools participated in the study. The findings revealed that teachers find themselves proficient in almost four language skills. The data collected also showed that Turkish teachers of English mostly think that they are competent enough in conveying the meaning of what they read and they are more likely to use advanced vocabulary in written con-texts than in spoken interactions. However, the analysis of the open-ended questions revealed that there is still room for language improvement.
Vatandaşlık bağlamında sosyal bilgiler öğretmen adaylarının vatanseverlik algıları
Authors: TARHAN Emine , MEMİŞOĞLU Hatice
Published: July 2021

Bu araştırmanın amacı, sosyal bilgiler öğretmen adaylarının vatanseverlik algılarını belirlemeye çalışmaktır. Araştırmada nitel araştırma yöntemi kullanılmıştır. Veriler yarı yapılandırılmış görüşme formu ile toplanmıştır. Çalışma grubu maksimum çeşitlilik esasına dayalı olarak Türkiye’nin farklı coğrafi bölgelerinden 7 üniversitede dördüncü sınıfta öğrenim gören 50 öğretmen adayından oluşmaktadır. Veriler içerik analizi yöntemi ile çözümlenmiştir. Araştırmanın sonuçlarına göre; sosyal bilgiler öğretmen adayları vatanseverlik tanımını en çok “çalışmak”, “sahip çıkmak - korumak” temaları ile ilişkilendirilmiştir. Vatanseverliğin, daha iyi bir yaşam ortamı ve ülkenin var olmasını sağladığı için önemli görüldüğü; vatansever kişilerin, evrensel ve milli değerlere sahip olması gerektiği belirtilmiştir. Vatanseverlik eğitiminde gördükleri temel sorunlar, öğretmenin yetersizliği ve derslerin teorik olarak işlenmesidi
Evaluation of openness effects on economic growth in Turkey
Authors: ÖZBEY Kerem , BOZ İbrahim , SALTIK Ömür
Published: July 2021

Especially, after 1980, the effect of labour productivity and capital investments on income per capita observed in open economies in the globalizing trade system has attracted the attention of growth economics literature. In this study, the relationship between labour productivity, fixed capital investments and commercial openness in Turkey between 1980-2016 was examined by the ARDL method. The results match the findings of Solow, Romer and Lucas whose models indicate that increase in openness, technology factor, labour productivity and fixed capital investments affect the economic growth process in a positive and significant way. In this sense, among the findings, the increasing level of integration into global trade causes technology and know-how transfer, the growth rate increases together with labour and capital efficiency in the next stage.
Novel Nondestructive Technique to Determine Optimum Harvesting Stage of ‘Ataúlfo’ Mango Fruit
Authors: Osuna-Garcia Jorge A. , Olivares-Figueroa Jesús Daniel , Toivonen Peter M.A. , Pérez-Barraza Ma. Hilda , Goenaga Ricardo , Graciano-Cristóbal María J.
Published: July 2021

A portable spectrometer was validated to determine optimum harvesting stage of ‘Ataúlfo’ using dry matter and skin color as fruit indicators. To build the model, samples were collected as follows: a. Unripe; b. Green Mature 1; c. Green Mature 2; d. Green Mature 3; and e. Fully mature. Fruit were scanned with a near infrared spectrometer at three temperatures (15, 25, and 35 °C). Skin color (‘a’ value) was measured with a Minolta 400 colorimeter. DM was attained in a conventional oven by drying samples for 72 h at 60 °C. Model was built and validated three times. The best model linearity was obtained on skin color ‘a’ (R2 = 0.98), whereas for DM the R2 was only 0.70. For the first validation, the best predicted value was skin color ‘a’ with an R2 = 0.9144, followed by DM with an R2 = 0.7056. On the second validation, the adjusted predicted value for skin color ‘a’ had an R2 = 0.8798, while DM had an R2 = 0.4445. When comparing NIR versus Heat Units Accumulation, in Nayarit, ‘Ataúlfo’ skin color average difference between the spectrometer vs the colorimeter was only -0.04. For ‘Ataúlfo’ from Sinaloa, skin color average difference was only -0.06, but the correlation was higher (R2 = 0.90). In conclusion, measuring skin color with the NIR spectrometer has potential as a nondestructive technique to determine the optimum harvesting stage of ‘Ataúlfo’ mango.
A CASIMIR ELEMENT INEXPRESSIBLE AS A LIE POLYNOMIAL
Authors: CANTUBA Rafael Reno S.
Published: July 2021

Let $q$ be a scalar that is not a root of unity. We show that any

nonzero polynomial in the Casimir element of the Fairlie-Odesskii

algebra $U_q'(\mathfrak{so}_3)$ cannot be expressed in terms of

only Lie algebra operations performed on the generators

$I_1,I_2,I_3$ in the usual presentation of

$U_q'(\mathfrak{so}_3)$. Hence, the vector space sum of the center

of $U_q'(\mathfrak{so}_3)$ and the Lie subalgebra of

$U_q'(\mathfrak{so}_3)$ generated by $I_1,I_2,I_3$ is direct.
THE LOEWY STRUCTURE OF CERTAIN FIXPOINT ALGEBRAS, PART II
Authors: BREUER T. , L. HETHELYI L. , HORVATH E. , KULSHAMMER B.
Published: July 2021

In Part I of this paper, we introduced a class of certain algebras of finite dimension over a field.

All these algebras are split, symmetric and local. Here we continue to investigate their Loewy structure.

We show that in many cases their Loewy length is equal to an upper bound established in Part I,

but we also construct examples where we have a strict inequality.

The algebras considered here include certain rings of fixpoints

under the action of particular finite groups.

Thus we consider the results in this paper as a contribution to

the general theory of fixpoint rings.
$f$-REPRESENTATIVES GROUPS
Authors: HOOSHMAND M. H.
Published: July 2021

The $b$-parts, $b$-addition of real numbers and some of their

extensions (e.g., $f$-multiplications) were introduced and studied

by the author. In this paper, we introduce $f$-representatives

groups of a given group $(G,\cdot)$ which can be considered as a

generalization of the group of the least non-negative residues

(modulo $n$). Thereafter, we study some of their important

properties and their relations among the ground group $(G,\cdot)$,

a related quotient group, and $f$-grouplikes. Finally, many

equivalent conditions for $f$-representatives groups and several

examples in the group of real numbers are given.
SOME PROPERTIES OF STAR OPERATIONS ON RING EXTENSIONS
Authors: PAUDEL Lokendra , TCHAMNA Simplice
Published: July 2021

Let $\star$ be a star operation on a ring extension $R\subseteq S$. A ring extension $R\subseteq S$ is called

Pr\"ufer $star$-multiplication extension (P$\star$ME) if $(R_{[\m]}, \m _{[\m]})$ is a Manis pair in $S$ for

every $\star$-maximal ideal $\m$ of $R$. We establish some results on star operations, and we study P$\star$ME

in pullback diagrams of type $\square$. We show that, for a

maximal ideal $\m$ of $R$, the extension $R_{[\m]} \subseteq S$ is

Manis if and only if $R[X]_{[\m R[X]]} \subseteq S[X]$ is a Manis

extension.
CHROMATIC POLYNOMIALS AND BIALGEBRAS OF GRAPHS
Authors: FOISSY Loic
Published: July 2021

The chromatic polynomial is characterized as the unique polynomial invariant of graphs, compatible with two interacting bialgebras structures:

the first coproduct is given by partitions of vertices into two parts, the second one by a contraction-extraction process.

This gives Hopf-algebraic proofs of Rota's result on the signs of coefficients of chromatic polynomials and of Stanley's interpretation

of the values at negative integers of chromatic polynomials. We also consider chromatic symmetric functions and their noncommutative versions.
Modelling the impact of Artificial Intelligence on the labour market in Czechia
Authors: Fatun Martin , Pazour Michal
Published: July 2021

This article describes an original model developed in the Technology Centre CAS for the estimation of the impact of Artificial Intelligence (AI) on the labour market in Czechia. On the contrary to the previous estimates, this model is based on the comparison of projected future technical capabilities of AI with a mix of capabilities needed in different job categories. Both the importance and the level of capabilities are taken into account in order to assess the impact of AI on jobs in three different time horizons. Based on the model calculations, it can be expected that on the five-year horizon the AI will be able to replace more than 50% of the required capabilities in 11 % of the occupations. On the thirty-year horizon, AI can replace over 50% of capabilities in the vast majority of the current professions. At the same time, new professions will continuously emerge, though they will place different demands on their performers and will require different skills and capabilities in comparison to current professions. The model and its results may be effectively used for efficient adaptation of education, lifelong learning and retraining to the changing nature of work, and related new demand for workers’ capabilities.
Application of plant natural products for the management of postharvest diseases in fruits
Authors: Wan Chunpeng , Kahramanoğlu İbrahim , Okatan Volkan
Published: July 2021

Prevention of postharvest losses has been a very important concern in the scientific world for many centuries, since adoption of an effective means to curtail such losses is believed to help in reaching sustainability in horticultural production and prevention of hunger around the world. The main means of deterioration in fruits, which may occur after harvest, include physiological changes/losses, physical losses, biochemical changes, changes in enzymatic activities and pathological deterioration. Among these, diseases cover the most important part; the losses due to diseases range from 5% to 20%, and this figure may extend up to >50% in the cases of certain susceptible cultivars. Fungicides have been the most important tool for the management of postharvest diseases for many years, together with hygiene, cold storage and packaging. However, due to the scientifically confirmed hazards of agro-chemicals on environment and human health, the acceptability of agro-chemicals decreased and scientists turned their attention towards natural alternatives. Most tropical and subtropical fruits contain a superficial cuticle, which helps them to regulate respiration and transpiration and protects against microbial decay. However, the waxy cuticle is generally being removed or damaged during washing or other handling practices. Therefore, the application of protective coatings (including wax) has been used in the fruit industry since the twelfth century, against microbial decay and for maintaining an acceptable standard of postharvest quality. This review aims to summarise and discuss the main natural products used for this purpose, to provide a broad-in-scope guide to farmers and the fruit storage sector.
Introduction: Remembering the Socialist Past
Authors: Vrzgulová Monika , Lutherová Soňa G.
Published: July 2021

This text focuses on qualitative research of the past when it comes to the communist regimes in Europe, particularly Slovakia (as part of former Czechoslovakia). The authors introduce the ongoing research project Current Images of the Socialism as well as its methodological and theoretical frames. They present the findings and challenges, as also articulated during the international conference Memory of the Communist Past (2020) and introduce selected articles included in this special issue.
Lessons on Communism: Party Schools in Italy in the 20th Century
Authors: Tonelli Anna
Published: July 2021

The Italian Communist Party created the most effective political school—and the only one in Italy—aimed at creating cadre leaders. The first schools were in Rome and Milan, and over the following decades the school system spread throughout the country, eventually counting about a hundred schools active throughout Italy until 1989.

The school in Rome, which was the only one to remain open for a further four years, was the main model for the others. Called the Frattocchie School, it was a residential school in the hills of Rome and was in operation from 1944 to 1993. The students attended classes from six months to a year; they studied historical materialism and the history of Bolshevism but also experienced collective life, group identity, and the theoretical and practical values of communism.

The Frattocchie model began with an initial period in which training consisted of the organization and acculturation of the working classes, starting with workers and peasants, according to a schema influenced by the Soviet schools but where the socializing bent of the Italian institutes mitigated the sectarianism and dogmatism of Moscow.

The aim of the training was to build the careers of future politicians capable of embodying the ideals of a party that demanded control, preparation, and discipline. For this reason, the Italian Communist Party schools represented an original example in teaching methods and curricula, handing down the memory of communism over time. The diaries, questionnaires, and testimonies of the students who attended the Frattocchie School in its 50 years of activity are important sources and a precious heritage to understand how the Communist “faith” became a vehicle of recognition and belonging. Even today the name Frattocchie is associated with a model of party school to be imitated in order to teach methods and principles to those who want to pursue a political career.
Effect of Planting Time and Corms Treatment with Gibberellic Acid on Growth, Flowering, and Vase Life of Freesia hybrida ‘Corona’
Authors: Adil Asmaa Mohammed , Ahmed Ebtisam Esmaael , Al-Chalabi Angham Talal , Al-Ma’athedi Ali Farouq
Published: July 2021

Freesia hybrida is one of the most important cut flowers with a short vase life. The present study was conducted to explain the effect of the two planting dates December 1st and 15th and soaking corms before planting in gibberellic acid at concentrations of 0, 75, and 150 mg·L−1 on the growth, flowering, and flowers quality of Freesia hybrida ‘Corona’. A larger diameter of the inflorescence stem and floret head, fresh weight of inflorescence, and longer vase life were obtained when planted on December 1st. Soaking the corms in a GA3 solution of 150 mg·L−1 before planting significantly extended the vase life compared to the control. Finally, it can be concluded that the planting of corms soaked in a solution of 150 mg·L−1 GA3 on December 1st in unheated greenhouses can improve the growth, development, and quality of flowers of Freesia hybrida ‘Corona’.
Development and validation of a nomogram for predicting the disease progression of nonsevere coronavirus disease 2019
Authors: Li Xue-lian , Wu Cen , Xie Jun-gang , Zhang Bin , Kui Xiao , Jia Dong , Liang Chao-nan , Zhou Qiong , Zhang Qin , Gao Yang , Zhou Xiaoming , Hou Gang
Published: July 2021

Background and Objectives

The majority of coronavirus disease 2019 (COVID-19) cases are nonsevere, but severe cases have high mortality and need early detection and treatment. We aimed to develop a nomogram to predict the disease progression of nonsevere COVID-19 based on simple data that can be easily obtained even in primary medical institutions.

Methods

In this retrospective, multicenter cohort study, we extracted data from initial simple medical evaluations of 495 COVID-19 patients randomized (2:1) into a development cohort and a validation cohort. The progression of nonsevere COVID-19 was recorded as the primary outcome. We built a nomogram with the development cohort and tested its performance in the validation cohort.

Results

The nomogram was developed with the nine factors included in the final model. The area under the curve (AUC) of the nomogram scoring system for predicting the progression of nonsevere COVID-19 into severe COVID-19 was 0.875 and 0.821 in the development cohort and validation cohort, respectively. The nomogram achieved a good concordance index for predicting the progression of nonsevere COVID-19 cases in the development and validation cohorts (concordance index of 0.875 in the development cohort and 0.821 in the validation cohort) and had well-fitted calibration curves showing good agreement between the estimates and the actual endpoint events.

Conclusions

The proposed nomogram built with a simplified index might help to predict the progression of nonsevere COVID-19; thus, COVID-19 with a high risk of disease progression could be identified in time, allowing an appropriate therapeutic choice according to the potential disease severity.
The influence of treated wastewater from the Lodz city agglomeration on the ice regime and water temperature of the Ner river
Authors: Bartnik Adam , Jokiel Paweł
Published: July 2021

The study attempts to answer the following question: Does human impact contribute to changes recorded in the Ner river ice regime? In replying to this question, data on water consumption in Lodz (Łódź) (a city in central Poland) in 1951–2017 were used, as well as observations of ice cover and all ice phenomena for the same period. The ice regime and water temperature of the river have changed over the past 70 years. The changes result not only from changes caused by global warming but also from additional fluctuations in this temperature as determined by changes in the quantity and quality of wastewater discharged into the river from the Lodz city agglomeration. The frequency of ice phenomena in the river decreased, and their duration dropped by almost half. This tendency was compounded by a decrease in number of days with ice phenomena, which in turn was caused by a rapid increase in the amount of waste and thermally polluted waters supplied from Lodz. The river water temperature has now stopped increasing. The course of the river ice regime now resembles that of a natural watercourse again.
Effect of heat treatment on the microstructure and mechanical properties of a low-carbon X80 pipeline steel
Authors: Acosta-Cinciri B.C. , López-Granados N.M. , Ramos-Banderas J.A. , Hernández-Bocanegra C.A. , Garnica-González P. , López-Corpus J.A.
Published: July 2021

In this work, the effect of heat treatment conditions on the microstructure and mechanical properties of an American Petroleum Institute (API) X80 steel with a low carbon content of ~0.02% wt., destined for the manufacture of pipelines and pipeline transmission systems by welding, was investigated. Samples were heat treated under different conditions and then were characterized by scanning electron microscopy (SEM), orientation image microscopy (OIM), and electron backscattered diffraction (EBSD). The results showed that when the steel is fastly cooled from the austenitic field (990°C), the mechanical properties increase significantly [ultimate tensile strength (UTS) >1,100 MPa, yield strength (YS) 900 MPa, and elongation 27%] due to the high percentage of martensite (M) present in the microstructure (95%). In contrast, when the cooling rate decreases and the treatment conditions remain at/or above the bainitic/martensitic transformation (from 990°C to 600°C and 450°C), the mechanical properties are decreased by almost 50% because of the decrease in the percentage of martensite (18%). However, the percentage of elongation increases significantly (38%) due to the presence of other micro-constituents resulting from the phase transformation. On the other hand, the best combination of mechanical properties (UTS above 800 MPa and YS between 610 MPa and 720 MPa) was obtained when the steel acquired a dual-phase microstructure [(martensite/austenite)-(ferrite/martensite)] since the amount of martensite is conserved between 45% and 82%, in combination with the other micro-constituent present in the steel that allows us to achieve elongation percentages close to 30%.
Experimental investigation of the electrochemical micromachining process of Ti-6Al-4V titanium alloy under the influence of magnetic field
Authors: Praveena Gopinath T. , Prasanna J. , Chandrasekhara Sastry C. , Patil Sandeep
Published: July 2021

An attempt has been made to study the influence of magnetic field on the micro hole machining of Ti-6Al-4V titanium alloy using electrochemical micromachining (ECMM) process. The presence of magneto hydro dynamics (MHD) is accomplished with the aid of external magnetic field (neodymium magnets) in order to improve the machining accuracy and the performance characteristics of ECMM. Close to ideal solution for magnetic and nonmagnetic field ECMM process, the parameters used are as follows: concentration electrolyte of 15 g/l; peak current of 1.35 A; pulse on time of 400 s; and duty factor of 0.5. An improvement of 11.91–52.43% and 23.51–129.68% in material removal rate (MRR) and 6.03–21.47% and 18.32–33.09% in overcut (OC) is observed in ECMM of titanium alloy under the influence of attraction and repulsion magnetic field, respectively, in correlation with nonmagnetic field ECMM process. A 55.34% surface roughness factor reduction is ascertained in the hole profile in magnetic field-ECMM in correlation with electrochemical machined titanium alloy under nonmagnetic field environment. No machining related stress is induced in the titanium alloy, even though environment of electrochemical machining process has been enhanced with the presence of magnetic field. A slight surge in the compressive residual factor, aids in surge of passivation potential of titanium alloy, resulting in higher resistance to outside environment.
Formability of laser welded steel/magnesium dissimilar metal with Sn powder-adhesive interlayer
Authors: Tao Tao , Liu Jinshui , Zhou Dianwu , Yan Youruiling , Zhou He
Published: July 2021

The exploratory experiments of laser fusion welding with Sn powder and the automotive adhesive addition were conducted for DP590 dual-phase steel and AZ31B magnesium alloy in an overlap steel-on-magnesium configuration. The characteristics of metal vapor/plasma were analyzed by collecting and analyzing plasma shape and welding spectra. The microstructure of the welded was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive X-ray spectrometer (EDS). The temperature field distribution of the joint was simulated by COMSOL finite-element software. The results showed that the transfer of heat from steel to the magnesium alloy is hindered by the adhesive layer, which is conducive to the simultaneous melting of steel and magnesium with large differences in melting and boiling points. In addition, the width of the molten pool increases, but the depth is shallow on the magnesium side. Meanwhile, the recoil pressure induced by the splashing of the molten pool reduces, and the surface quality of the weld is improved. Some intermetallic compounds (IMCs), such as FeSn, Fe1.3Sn, and Fe3Sn, are formed inside the molten pool, while columnar dendrite Mg2Sn phase is also produced. The presence of these phases helps realize the bidirectional metallurgical bonding of steel/magnesium dissimilar metals.