bluuebunny/crossref_metadata_2025 huggingface dataset:
Real-world data in legal framework of the Russian Federation
Authors: Borzova MA , Kalinichenko VV , Kolbin AS
Published: December 2023

The real-world data (RWD) constitute a modern trend in the healthcare system and in the structure of taking decisions. The trend is being actively developed in the Russian Federation. Ethical aspects of these trials and legal regulation of RWD are, however, still unresolved. In this paper, development of the legal field and national regulation of RWD in Russia is discussed during registration, assessment of healthcare technologies, management of patient registries, and development of clinical recommendations. It is shown that the acting regulatory field of the Russian Federation contains no bans on the use of RWD to support regulatory decisions. Nevertheless, the existing legal laws set limited opportunities for practical application and accounting of RWD by the competent authority. In conclusion, recommendations on further development of RWD legal field in Russia are provided.
Prácticas discursivas entre grupos indígenas salteños en entornos virtuales: el para qué y cómo de las publicaciones en páginas de Facebook
Authors: Benítez Bárbara Belén
Published: December 2023

En el presente trabajo se describen los usos que hacen los miembros de las comunidades indígenas de Salta de las publicaciones en páginas de Facebook. Para ello se recolectó el corpus a partir de un recorte sincrónico de 22 meses que incluye solo aquellas publicaciones provenientes de páginas administradas por indígenas salteños. Se analizó este material desde una perspectiva pragmático-discursiva a fin de exponer dichos usos y de describir sus particularidades lingüísticas.
The Effect Of Variety On High Plants And Node Of Corn Forage
Authors: Maidah Didah , Indriani Nyimas Popi , Susilawati Iin
Published: December 2023

The purpose of this study was to know the effect of variety on high plants and node of corn forage by knowing which varieties of corn gave the highest yield to plant heigt and node of corn forage. This research was conducted from February – April 2022 located in experimental garden in Forage Crop Laboratory, Animal Husbandry Faculty, Universitas Padjadjaran. This study used experimental method with randomized block design (RBD). There were four treatments used P1 = Bonanza varieties, P2 = Janisa varieties, P3= Asian 86 varieties and P4 = Sweet Lady varieties with six replications. The observed variables included plant height and node of corn plants. The result of statistical showed that the treatment of various varieties of corn had significant effect on plant height, and produced the highest plant height varieties of Janisa which is 175,42 cm, varieties of Bonanza which is 172,18 cm and varieties of Asia which is 161,58 cm and showed had no significant (P>0.05) on node of corn plants.
Pengaruh pemberian pakan suplemen dalam ransum lengkap terhadap status faali pedet sapi perah yang dipelihara di BPPIBTSP Bunikasih
Authors: Tanuwiria Ujang Hidayat , Syahrial Vegy , Mayasari Novi
Published: December 2023

Tujuan penelitian ini adalah mengetahui pengaruh pemberian  pakan suplemen dalam ransum lengkap terhadap status faali pedet sapi perah yang dipelihara BPPIBTSP Bunikasih dan mengetahui perlakuan mana yang memberikan status faali terbaik dalam kisaran normal. Rancangan yang digunakan adalah Rancangan Bujur Sangkar Latin (RBSL) dengan 4 perlakuan dan 4 periode. Perlakuan terdiri atas P0= 65% Hijauan + 35% K0 (100% konsentrat); P1= 65% Hijauan + 35% K1 (97% konsentrat + 3% protein bypass); P2= 65% Hijauan + 35% K2 (95% konsentrat+ 3% protein bypass+ 2% Ca-PUFA); P3= 65% Hijauan + 35% K3 (93% konsentrat + 3% protein bypass+ 2% Ca-PUFA+ 2% mineral organik). Data dianalisis menggunakan sidik ragam (ANOVA), Uji Jarak Berganda Duncan dan korelasi dengan metode Pearson Correlation. Hasil menunjukkan bahwa perlakuan berpengaruh tidak nyata (P>0,05) terhadap status faali. Selanjutnya terdapat korelasi positif antara status faali dengan nilai Temperature Humidity Index
DINAMIKA JAGUNG LOKAL YANG DISERAP PABRIK PAKAN TAHUN 2019 - 2021
Authors: Pradityo Puguh Susilo
Published: December 2023

Tujuan dari penelitian ini adalah mengetahui dinamika serapan jagung lokal di pabrik pakan tahun 2019-2021. Penelitian ini menggunakan metode deskriptif melalui pendekatan kuantitatif menggunakan.Analisis regresi digunakan untuk membuat model estimasi pemanfaatan jagung lokal (Y). Variabel yang diamati adalah produksi jagung lokal (X1), kapasitas silo (X2), produksi pakan unggas (X3), harga jagung lokal yang diterima oleh pabrik pakan (X4), harga jagung dunia (X5), kadar air jagung (X6), stok jagung pabrik pakan (X7), dan kecukupan jagung (X8) dari 83 perusahaan pabrik pakan. Hasil penelitian menunjukkan bahwa pembelian jagung lokal oleh pabrik pakan adalah 6.659 ribu ton (2019), 6.662 ribu ton (20200, dan 6.163 ribu ton (2021). Kecukupan jagung lokal untuk mendukung produksi pakan unggas pada tahun 2019 adalah 47 hari, pada tahun 2020 adalah 52 hari, dan pada tahun 2021 adalah 40 hari. Model terbaik untuk pemanfaatan jagung lokal adalah Y = 9200 + 0,754 X3 - 0,332 X5 + 0,394X7 (R2 = 0.707). Variabel yang mempengaruhi penyerapan jagung lokal adalah produksi pakan unggas, harga jagung dunia, dan stok jagung pabrik pakan.
Performa Heifer Sapi Friesien Holstein (FH) Yang Diberi Ransum Dengan Metode Total Mixed Ration (TMR) Pada Berbagai Umur Sapih
Authors: Permana Hilman , Suryanah Sari , Amalia Elly , Christi Raden Febrianto , Wandi Adi
Published: December 2023

Manajemen pakan adalah hal utama dalam pemeliharaan karena memiliki pengaruh yang tidak kecil terhadap pertumbuhan heifer agar bisa menjadi bibit yang berkualitas baik. Penelitian bertujuan untuk mengetahui performa heifer sapi FH pada umur sapih berbeda yang diberikan pakan komplit dengan metode Total Mixed Ration (TMR). Metode penelitian menggunakan eksperimental dengan pengujian data menggunakan Rancangan Acak Lengkap (RAL) yang terdiri atas 3 perlakuan yaitu US1 (heifer dengan umur sapih 70 hari), US2 (heifer dengan umur sapih 80 hari) dan US3 (heifer dengan umur sapih 90 hari),  dengan  10 ulangan. Data yang didapat dianalisis menggunakan tabel sidik ragam, bila terdapat pengaruh perlakuan dilanjutkan dengan uji wilayah berganda Duncan’s. Hasil menunjukkan bahwa umur sapih berbeda pada heifer berpengaruh nyata terhadap konsumsi ransum, pertambahan bobot badan, serta konversi ransum dengan metode TMR. Pemberian complete feed pada perlakuan US1 atau heifer yang disapih pada umur 70 hari memberikan nilai rataan performa yang baik dari aspek konsumsi, pertambahan bobot badan, dan meningkatkan efisiensi ransum dengan nilai konversi ransum 8,87.
Pengaruh Dosis Inokulum dan Lama Fermentasi oleh Bacillus subtilis Terhadap Kandungan Nutrien Tepung Bulu Ayam
Authors: Wahyuni Tri , Prestiani Neni , Rusmana Denny , Hasbuna Abun
Published: December 2023

Penelitian ini bertujuan untuk mengetahui pengaruh dosis inokulum dan lama fermentasi oleh Bacillus subtilis yang menghasilkan kandungan nutrien tepung bulu ayam terbaik. Penelitian menggunakan metode eksperimental dengan rancangan acak lengkap (RAL) pola tersarang. Terdiri dari faktor A yaitu dosis inokulum dan faktor B yaitu lama fermentasi. Perlakuan terdiri atas dosis inokulum Bacillus subtilis (D1: 2,5%, D2: 5%, dan D3: 7,5% v/b tepung bulu ayam) dan lama fermentasi (L1: 1 hari, L2: 3 hari dan L3: 5 hari) dengan 3 kali ulangan. Data hasil penelitian diuji menggunakan metode sidik ragam dan dilanjutkan dengan uji jarak berganda duncan. Hasil penelitian menunjukkan dosis inokulum dan lama fermentasi tidak berpengaruh nyata terhadap kandungan bahan organik tepung bulu ayam, namun berpengaruh nyata terhadap kandungan protein kasar, serat kasar dan lemak kasar tepung bulu ayam. Dosis inokulum Bacillus subtilis 5% dan lama fermentasi 3 hari menghasilkan kandungan bahan organik dan protein kasar terbaik yaitu 98,17% dan 85,23% (D2L2). Kemudian, dosis inokulum Bacillus subtilis 5% dan lama fermentasi 5 hari menghasilkan kandungan serat kasar terbaik yaitu 0,33% (D2L3), serta dosis inokulum Bacillus subtilis 7,5% dan lama fermentasi 5 hari menghasilkan kandungan lemak kasar terbaik yaitu 8,75% (D3L3).
EVALUASI KUALITAS PAKAN AYAM RAS PEDAGING (BROILER) YANG BEREDAR TERHADAP PENERAPAN STANDAR NASIONAL INDONESIA
Authors: Dayat Dayat , Jayanegara Anuraga , Sukria Heri Ahmad
Published: December 2023

Penelitian ini bertujuan untuk menganalisis kesesuaian kualitas pakan ayam broiler dengan Standar Nasional Indonesia (SNI) sebagai upaya untuk meningkatkan dan memastikan kualitas broiler. Kegiatan ini bertujuan untuk menjaga kualitas dan keamanan pakan yang tersedia di Indonesia. Penelitian ini berfokus pada kriteria SNI untuk pakan ayam broiler, khususnya SNI 8173-1:2022 untuk fase pra-starter, SNI 8173-2:2022 untuk fase starter, dan SNI 8173-3:2022 untuk fase finisher. Dengan menggunakan data sekunder dari pengujian pakan yang dilakukan di tiga laboratorium, penelitian ini mengkaji parameter-parameter termasuk kadar air, abu, lemak kasar, serat kasar, protein kasar, kalsium, fosfor, aflatoksin, lisin, dan metionin. Analisis kesesuaian parameter-parameter ini dengan standar SNI dilakukan berdasarkan wilayah produsen pakan dan laboratorium pengujian. Hasil penelitian menunjukkan bahwa nilai rata-rata hasil analisis untuk setiap parameter uji sesuai dengan SNI. Namun, ada parameter uji dengan sampel yang tidak sesuai dengan SNI, yang mencakup proporsi tertinggi (10% dari total sampel). Parameter-parameter ini adalah metionin dan lisin. Ketika dikategorikan berdasarkan wilayah produsen, beberapa parameter uji menunjukkan tingkat ketidaksesuaian melebihi 10% dari total sampel dalam wilayah masing-masing. Secara khusus, parameter-parameter ini mencakup protein kasar asal finisher dari Sulawesi Selatan, lemak kasar pra-starter dari Lampung, serat kasar pra-starter dari Kalimantan, kalsium finisher dari Jawa Timur, aflatoksin starter dari Jawa Timur, lisin starter dari Sumatera Barat, dan metionin pra-starter dari Kalimantan. Selain itu, evaluasi berdasarkan laboratorium pengujian menunjukkan bahwa beberapa parameter uji tertentu memiliki tingkat ketidaksesuaian melebihi 10% dari total sampel laboratorium. Parameter-parameter ini mencakup kalsium finisher, lisin starter, dan metionin finisher.
MEDIA TUMBUH LARVA BLACK SOLDIER FLY DENGAN PENAMBAHAN SUMBER OMEGA 3 DAPAT MENINGKATKAN PRODUKSI MAGGOT, KANDUNGAN NUTRISI, DAN BILANGAN IOD TEPUNG MAGGOT
Authors: Montesqrit Montesqrit
Published: December 2023

Studi ini mengevaluasi dampak penambahan bahan sumber omega 3 pada media pertumbuhan larva Black Soldier Fly (Hermetia illucens) terhadap produksi larva BSF, kandungan nutrisi dan bilangan iod tepung maggot. Penelitian ini menggunakan metode eksperimen dengan Rancangan Acak Lengkap (RAL) yang terdiri dari 5 perlakuan dan 5 ulangan. Hasil penelitian menunjukkan bahwa penambahan bahan sumber omega 3 pada media pertumbuhan larva BSF memberikan pengaruh yang sangat signifikan terhadap produksi larva BSF, kandungan lemak kasar dan bilangan iod tepung maggot, namun tidak memberikan pengaruh yang signifikan terhadap kandungan bahan kering dan protein kasar tepung maggot. Kandungan lemak kasar tepung maggot lebih tinggi pada media pertumbuhan dengan tambahan krokot dan minyak ikan, namun bilangan iod sangat signifikan tinggi pada tepung maggot yang dihasilkan dengan media pertumbuhan dengan penambahan tanaman krokot. Dari hasil penelitian ini dapat disimpulkan bahwa penambahan tanaman krokot sebagai sumber omega 3 pada media pertumbuhan larva BSF memberikan pengaruh terbaik terhadap produksi dan kandungan nutrisi maggot BSF.
El agua en la poesía de la nostalgia de la tierra natal de Su Shi (Su Dongpo): simbología y contexto
Authors: Wang Qiaochu
Published: December 2023

Como imagen fundamental de la poesía clásica china, el agua cobra una notable importancia en la obra de Su Shi (Su Dongpo). En este trabajo se analizan los significados de este elemento natural en las composiciones de Su Shi relacionadas con la nostalgia por la tierra natal —uno de los temas más representativos de su creación poética— según las diferentes distancias psicológicas entre el autor y la imagen, las cuales podrían clasificarse en tres: la evocación de la nostalgia por tierra natal, la personificación y la espiritualización. A través de la traducción y las observaciones analíticas, se estudia cómo el poeta asimila la tradición literaria para después innovar respecto a la simbología del agua. El artículo desvela las influencias de las doctrinas confucianistas y daoístas en el autor, lo que ayuda a comprender su mundo interior manera más profunda.
Entre la inmediatez y la tradición performativa
Authors: Docters Héctor Anibal , Fanzini Germán
Published: December 2023

Las músicas urbanas contemporáneas argentinas presentan algunas dificultades respecto de las herramientas de análisis de la musicología tradicional. Este trabajo pretende abordar las particularidades de estos nuevos géneros, partiendo de los contrastes entre las producciones grabadas y las músicas en vivo. Para ello nos hemos centrado en construir nuevos enfoques de análisis, que se correspondan con estas nuevas formas de hacer música y nos permitan arribar a conclusiones novedosas en el género.
Educação em Direitos Humanos
Authors: Carvalho Anna Karoline Cavalcante
Published: December 2023

O presente artigo objetiva tecer uma análise acerca do debate de gênero no ensino brasileiro. Assim de forma elucidativa, apontar as crescentes situações de gênero na atualidade, fronte a tempos de ofensivas do conservadorismo. Uma análise da trajetória do conceito de gênero e a importância desse debate na sociedade em busca da diminuição das desigualdades existentes que obstruem a efetivação dos direitos humanos.
Regulatory challenge of the license and permission for energy industry operation on renewable energy growth in Thailand
Authors: Aggarwal Suteemon , Usapein Parnuwat
Published: December 2023

This research explores the implementation of streamlined licensing frameworks and consolidated procedures for promoting renewable energy generation worldwide. An in-depth analysis of the challenges faced by renewable energy developers and the corresponding solutions was identified through a series of industry interviews. The study aims to shed light on the key barriers encountered during project development and implementation, as well as the strategies employed to overcome these obstacles. By conducting interviews with professionals from the renewable energy sector, the research uncovers a range of common challenges, including complex permitting processes, regulatory uncertainties, grid integration issues, and financial barriers. These challenges often lead to project delays, increased costs, and limited investment opportunities, thereby hindering the growth of renewable energy generation. However, the interviews also reveal various solutions and best practices employed by industry stakeholders to address these challenges effectively. These solutions encompass the implementation of streamlined licensing procedures, such as single licenses and one-stop services, to simplify and expedite the permitting process. Additionally, the development of clear and stable regulatory frameworks, collaboration between public and private entities, and improved grid infrastructure were identified as key strategies to overcome regulatory and grid integration challenges. The research findings highlight the importance of collaborative efforts between policymakers, industry players, and other relevant stakeholders to create an enabling environment for renewable energy development. By incorporating the identified solutions and best practices, policymakers can streamline regulatory processes, foster public-private partnerships, and enhance grid infrastructure, thus catalyzing the growth of renewable energy projects.
Effects of adenoidectomy and changed mode of breathing on incisor and molar dentoalveolar heights and anterior face heights
Authors: Mahony Derek , Karsten Agneta , Linder-Aronson Sten
Published: December 2023

Background: Mouth breathing may affect facial form and the positions of the teeth.

Objectives: To determine whether the increased dentoalveolar and facial heights found in mouth breathing children with enlarged adenoids are maintained following adenoidectomy and changed mode of breathing from mouth to nose.

Methods: The subjects were Swedish children, either mouth breathers with nasal obstruction caused by large adenoids, or nose breathers. The children in the mouth breathing group were adenoidectomized at seven years of age and changed from mouth breathing to nose breathing. The unoperated subjects were age and sex matched to the operated subjects, and both groups were followed up again at 12 years of age. The incisor and molar dentoalveolar heights and anterior face heights, measured on lateral cephalometric radiographs, were compared prior to adenoidectomy and at 12 years of age.

Results: Significant intra-group increases were found for all dentoalveolar heights and 5 out of 6 facial heights. Only the ratio of upper anterior to lower anterior face height in the controls was not different statistically. Upper posterior dentoalveolar height was significantly larger (p < 0.05) in the adenoidectomized group compared with the controls at follow up, but not before adenoidectomy. Lower face height was significantly longer (p < 0.001) in the adenoidectomized group compared with the control group initially, and at follow up (p < 0.01). Initially, the ratio of upper face height to lower face height was significantly larger (p < 0.001) in the control group than the adenoidectomized group, but the groups were similar at follow up.

Small, but statistically significant, correlations were found between the changes in upper molar dental height and the mode of breathing (p < 0.05) in the adenoidectomized group, and between the change in the ratio of upper to lower face heights and the mode of breathing (p < 0.01).

Conclusion: The changes in the dentoalveolar heights of the maxillary molars, and the ratio of the upper and lower anterior face heights seem to be associated with the change in mode of breathing from mouth to nose breathing after adenoidectomy.
A comprehensive survey of retention procedures in Australia and New Zealand
Authors: Wong Pamela M. , Freer Terry J.
Published: December 2023

Objectives: This survey aimed to identify consistencies in retention procedures.

Methods: Three hundred Australian orthodontists and 70 New Zealand orthodontists were randomly selected for the study. A questionnaire gathered their views regarding the most commonly used retainers, wire types and sizes of bonded retainers, factors influencing the design of retainers, duration of regular retention, definition of permanent retention, percentage of cases that needed permanent retention, factors influencing the decision to use permanent retention, changes in retention protocols over the last five years, and reasons for such changes.

Results: Upper invisible and lower canine-to-canine bonded retainers were the most commonly used retainers. Pretreatment tooth position was the major factor influencing the design of retainers, and most respondents preferred bonded retainers. The majority preferred multistrand stainless steel wire for bonded retainers. The most common wire size was 0.0175 inch. Orthodontists more commonly recommended a regular retention period of more than two years, and defined permanent retention as “lifetime”. Orthodontists applied permanent retention to either a very high or very low percentage of their cases. A high percentage of respondents made changes to their retention protocols over the past five years. There was no relationship between factors influencing the design of retainers and the preferred type of retainer. There was no consensus on the major factor influencing the decision to use permanent retention.

Conclusions: Retention procedures are variable and dependent largely on personal preferences. There does not seem to be any consistent pattern in the application of retention methodologies.
Orthodontic practices in Australasia: practice activity
Authors: Mathew Rachael , Sampson Wayne J. , John Spencer A.
Published: December 2023

Objective: To collect baseline data on practice types and services provided by orthodontists in Australia and New Zealand. Method: A total of 510 questionnaires was sent and 258 were returned. The response rate was 53 per cent.

Results: The average age of respondents was 50 years (SD: 9.8 years) with female orthodontists being younger (Mean: 42.3 years; SD: 6.5). The ratio of responding female to male orthodontists was 1:8.8. Overall, more orthodontists were in solo private practice than associateships or partnerships. New Zealand orthodontists were more likely to be in associateships. Australian orthodontists had twice the number of practices (Mean: 2.4; SD: 1.4) than their New Zealand counterparts (Mean: 1.1; SD: 0.3). Orthodontists estimated they saw a mean of 21.3 (SD: 11.3) patients per day. Older orthodontists saw few patients in a day and spent fewer hours in any practice activity in a week. The mean waiting time for a consultation appointment in the private sector in New Zealand was nearly twice that in Australia. There was a significant association between male orthodontists and referral of patients by general dental practitioners. More than three quarters of respondents incorporated retention fees into the treatment fee. Overall, orthodontists were satisfied with the workload and did not want more orthodontists in their geographical area.

Conclusion: This study provides a sound basis for consideration of challenges in practice and changes over time.
Fixed presurgical orthopaedics for bilateral cleft lip and palate
Authors: Abu-Rub Najeeb , Rani Samsudin Ab. , Abdullah Ahmad Burhanudin , Abdullah Nizam
Published: December 2023

Background: Presurgical orthopaedics has been employed since the 1950s as an adjunctive neonatal therapy for the correction of cleft lip and palate. It is accepted that presurgical orthopaedic plates facilitate lip repair and balanced orofacial growth. Aims: The aims of this retrospective study of newborns with bilateral cleft lip and palate were two-fold: to describe the use of a fixed appliance to reposition the displaced fragments, and to determine if the magnitude of the palatal changes was age-related.

Methods: Study models of 12 infants with bilateral cleft lip and palate were used. The models recorded the condition prior to expansion (2-3 weeks after birth) and at the end of retention (at the time of lip surgery). The intercanine width, intertuberosity width, palatal length, palatal depth and intercanine arch length were measured.

Results: As a result of the expansion the intercanine width and intertuberosity width increased, and the palatal length and inter-canine arch length decreased. These changes were not age-related.
Tribological behaviour of orthodontic archwires under dry and wet sliding conditions in-vitro. II - Wear patterns
Authors: Berradja Abdenacer , Willems Guy , Celis Jean-Pierre
Published: December 2023

Objective

To evaluate the wear patterns of orthodontic archwires in dry and wet conditions in-vitro.

Methods

The patterns of wear of stainless steel and NiTi orthodontic archwires were investigated with a fretting wear tribometer fitted with an alumina ball. The tribometer was operated at 23°C in three different environments: ambient air with 50 per cent relative humidity (RH), 0.9 wt. per cent sodium chloride solution and deionised water. Differences in the wear characteristics of the archwires were investigated by scanning electron microscopy. Energy Dispersive X-ray Analysis and Inductively Coupled Plasma Analysis were used to investigate the surface composition of the wires, the wear debris generated during fretting and the corrosion products in the test solutions.

Results

Both archwire materials were degraded by oxidational wear in ambient air. The NiTi wires were more resistant to wear than the stainless steel wires. In the aqueous media the stainless steel wires were degraded by abrasive wear, while the NiTi wires were degraded by adhesive wear.

Conclusion

In ambient air with 50 per cent RH, NiTi wires were more resistant to wear than stainless steel wires. Both archwire materials exhibited higher wear rates in the solutions than in air, indicating some synergism between the wear and corrosion processes. In the solutions the stainless steel archwires had a much lower corrosion-wear resistance than the NiTi archwires.
Use of miniscrews as temporary anchorage devices in orthodontic practice. I - Introduction
Authors: Anka George
Published: December 2023

Aim

To describe the use of miniscrews as temporary anchorage devices to facilitate mesial, distal and vertical orthodontic tooth movement.

Method

The development of miniscrews and the direct and indirect application of forces from these devices are described. Case reports will be given in a second paper.
Miniplates and screws in treatment of skeletal Class III malocclusion with missing posterior teeth. A case report
Authors: Rattanayatikul Charunee , Godfrey Keith , Chawengchettanon Jaruwarintr , Vattraraphoudet Thepparit
Published: December 2023

Aim

To describe the use of miniplates for temporary skeletal anchorage to distalise the entire lower dentition.

Methods

A 40 year-old woman presented with a skeletal Class III malocclusion and multiple missing maxillary and mandibular teeth. The treatment plan was to distalise the mandibular dentition. Two miniplates and screws in the mandibular retromolar region were used as temporary skeletal anchorage for Class I elastics. The entire lower dentition was distalised into a Class I incisor relationship with the miniplate and screw anchorage.
Effect of Topacal C-5 on enamel adjacent to orthodontic brackets. An in vitro study
Authors: Nasab Navid Karimi , Kajan Zahra Dalili , Balalaie Azadeh
Published: December 2023

Background

Enamel demineralisation leading to ‘white spots’ can occur during orthodontic treatment. Casein phosphopeptides may reduce demineralisation during orthodontic treatment.

Aims

To determine if a casein phosphopeptide preparation, Topacal C-5 (Enamel Improving Cream, NSI Dental Pty Ltd, Leighton, Hornsby, Australia), will inhibit demineralisation of enamel adjacent to orthodontic brackets.

Methods

Twenty-four pairs of human premolars from 24 subjects were used. One premolar in each pair was randomly assigned to the control group and the contralateral premolar was assigned to the experimental group. A stainless steel orthodontic bracket was bonded to the buccal surface of each tooth and a window of enamel (4 mm x 1 mm) left open to acid attack. The teeth were cycled alternately through an artificial saliva medium (11 hours) and an acid medium (1 hour) for 31 days. Topacal C-5 was applied to the exposed enamel windows in the experimental group after immersion in the acid medium. After 31 days the teeth were sectioned longitudinally and the depths of the enamel lesions measured by polarised light microscopy.

Results

Significantly deeper demineralisation occurred in the control teeth not protected by Topacal C-5 and at sites close to the brackets in both groups.

Conclusions

In this in vitro system, Topacal C-5 partially reduced the depth of enamel demineralisation compared with teeth not covered with Topacal C-5. Topacal C-5 may reduce enamel demineralisation in patients with fixed orthodontic appliances.
Space closure using the Hycon device. A case report
Authors: Kachiwala Viral A. , Kalha Anmol S. , Vigneshwaran J.
Published: December 2023

Background

Space closure can be a difficult and uncomfortable procedure. Appliances able to be activated by the patient may reduce the number of visits for adjustment.

Objective

To describe the closure of spaces with the Hycon device, an intra-oral screw that can be activated by the patient.

Method

Sliding mechanics were used to retract the upper and lower anterior teeth following extraction of the first premolars in a patient with bimaxillary protrusion. The active force for retraction was derived from the Hycon device activated twice a week by the patient.

Results

The rate of space closure achieved was of the order of 1.9 mm/month. The extraction spaces were closed by distal movement of the anterior teeth and mesial movement of the posterior teeth.

Conclusion

The Hycon device proved to be an effective means of retracting the anterior teeth and protracting the posterior teeth. Because the device can be activated by the patient fewer visits for adjustment may be required.
Vertical changes in treated and untreated Class II division 1 malocclusions
Authors: Sharp Craig , Harkness Michael , Herbison Peter
Published: December 2023

Background

Treatment-induced increases in the height of the face may be permanent.

Aims

To determine if appliance-induced increases in the heights of the upper and lower molars in girls with Class II division 1 malocclusion, and the consequential increase in the height of the face are maintained.

Methods

Ten angles and 10 distances were measured on lateral cephalometric radiographs of 11 year-old girls (Range: 8.5–14.8 years) with treated (N = 9) and untreated (N = 8) Class II division 1 malocclusions. The intervals between the initial and recall records were, on average, 12 years (Range: 7.6–15.7 years) for the girls in the treatment group, and 8 years (Range: 4–13 years) for the girls in the untreated/control group. In the treatment group eight girls were treated with the Begg appliance and Class II elastics.

Results

Upper and lower molar dentoalveolar heights in both groups increased significantly between the initial and recall visits. There were no significant differences between the molar heights in the groups at the start or at recall. Anterior face height (AFH) also increased significantly in both groups between the initial and recall visits. At recall, AFH in the treatment group was significantly greater than AFH in the control group. This finding is attributed to a similar-sized difference between the groups at the start, to the longer period between the initial and recall records in the treatment group and to lesser variation in both groups at recall. In both groups, posterior face height increased significantly between the initial and recall stages. At the conclusion of the study there were no statistically significant differences between the treated and control groups in either overjet or the inclination of the upper incisors. Relapse of the upper incisors in the treatment group and retroclination of the upper incisors in the control group reduced the initial differences between the groups. These changes are attributed to altered lip posture and increased lip pressures in adolescence. At recall, angles SNA and SNB were significantly smaller in the treatment group.

Conclusion

The heights of the upper and lower molars and the face increased in both groups. Orthodontic treatment may have no lasting effects on either the height of the face or the heights of the molars in girls with Class II division 1 malocclusion.
Assessment of agreement in measuring orthodontic treatment need with the modified DHC
Authors: Bagheban Alireza Akbarzadeh , Nouri Mahtab , Safavi Mohammadreza
Published: December 2023

Aims

To determine senior dental students’ validity, reliability and category distinguishability when using the Dental Health Component (DHC) of the Index of Orthodontic Treatment Need (IOTN).

Methods

Randomly selected pretreatment dental casts of 42 patients were used. The casts were assessed by six senior dental students after a 4-day training period and three orthodontists using the modified Dental Health Component (DHC) of the Index of Orthodontic Treatment Need (IOTN). Validity and reliability in assessing the DHC were measured using kappa and the category distinguishability with two modified association models: square scores association model and the agreement plus square scores association model.

Results

The students’ mean validity was 0.67 and their mean reliability was 0.65. For two students the better model was the square scores association model (Categories 1 and 2: Mean 0.48; Categories 2 and 3: Mean 0.84). For four students the agreement plus square scores association model was the better model (Categories 1 and 2: Range: 0.90–0.99; Categories 2 and 3: 0.93–0.99)

Conclusion

In order to more precisely assess the reliability and validity of ordinal scales and the pattern of agreement between examiners association models should be used in addition to kappa.
Self-ligating appliances: evolution or revolution?
Authors: Fleming Padhraig S. , DiBiase Andrew T. , Lee Robert T.
Published: December 2023

Aims

To review the literature relating to self-ligating orthodontic appliances.

Methods

Narrative review of the relevant historic and contemporary research.

Results

Proposed advantages of these appliance systems include reduced friction, more efficient mechanotherapy, improved operator efficiency, and more secure ligation. Randomised clinical trials investigating these potential advantages have largely been equivocal.

Conclusions

Self-ligating brackets are here to stay and continue to be refined and enhanced. Further prospective studies investigating their clinical application and performance would be welcome.
The identification of possible reference planes on a CBCT scan taken with a small FOV—an observational analytical study
Authors: Felicita A. Sumathi , Maheswari T.N. Uma
Published: December 2023

Objectives

Unlike a CBCT scan which has a large field of view (FOV), a scan with a small FOV may not involve the base of the skull. Therefore, routinely used reference planes may not be available to evaluate treatment outcome. The present study was undertaken to determine if the palatal plane and a molar occlusal plane may be used as reference planes to measure the change in the axial inclination of the maxillary central incisor and the maxillary first permanent molar towards the end of orthodontic treatment on a CBCT scan captured with a small FOV.

Materials and methods

A lateral cephalogram and a CBCT scan with a small FOV were taken for fifteen young adults prior to, and six months after, mini-implant supported, distal movement of the maxillary arch. CBCT multi-planar slices were sequentially viewed to obtain an image that contained the entire length of the maxillary central incisor and the maxillary first permanent molar in the tangential view. The axial inclination of the maxillary central incisor and the maxillary first permanent molar was measured from the palatal plane and the molar occlusal plane on both sides. The same parameters were evaluated on the lateral cephalogram using the palatal plane as a reference. An independent t test (p = 0.05) was conducted to compare the results. A Bland–Altman plot with linear regression was constructed to measure accuracy, method agreement and reliability.

Results

There was no statistically significant difference when a change in the axial inclination of the maxillary central incisor and the maxillary first permanent molar was measured using the two reference planes. The change in axial inclination of the maxillary central incisor and maxillary first permanent molar had a 95% confidence interval of -1.82 to 4.19 and -4.48 to 3.05 and a p-value of 0.425 and 0.701 on the right side, respectively, and a 95% confidence interval of -1.76 to 4.79 and -4.41 to 2.79 and p-value of 0.350 and 0.650 on the left side.

Conclusions

The molar occlusal plane and the palatal plane may be used as reference planes for measuring change in the axial inclination of the maxillary central incisor and the first permanent molar in a CBCT scan taken with a small FOV.
Computer-Aided System for Layout of Fire Hydrants on Boards Designed Vessel Using the Particle Swarm Optimization Algorithm
Authors: Gomułka Piotr
Published: December 2023

The functional layout of fire safety equipment in technical spaces of ships is a time-consuming process. When designing a ship fire protection system, the designer must manually position each system component in such a way as to meet the requirements of regulations arising from the technical specification, various legal regulations of maritime conventions and classification societies of the vessel to be designed. Layout of fire hydrants assisted by a computer that is based on pre-defined criteria and various constraints could significantly support the designer in working easier and faster. This paper presents a prototype computer-aided design system that enables optimal placement of fire hydrants using the metaheuristic Particle Swarm Optimization (PSO) algorithm. This algorithm was used in Rhinoceros 3D software with its Grasshopper plugin for visualizing the arrangement of fire safety equipment. Various solution arrangements compared with the fire hydrant placement in real ships are illustrated by a case study. Demonstrating how design work can be facilitated and what potential benefits can be achieved are presented as well.
Digital Twin Test-Bench Performance for Marine Diesel Engine Applications
Authors: Minchev Dmytro , Varbanets Roman , Shumylo Oleksandr , Zalozh Vitalii , Aleksandrovska Nadiia , Bratchenko Pavlo , Truong Thanh Hai
Published: December 2023

The application of Digital Twins is a promising solution for enhancing the efficiency of marine power plant operation, particularly their important components – marine internal combustion engines (ICE). This work presents the concept of applying a Performance Digital Twin for monitoring the technical condition and diagnosing malfunctions of marine ICE, along with its implementation on an experimental test-bench, based on a marine diesel-generator. The main principles of implementing this concept involve data transmission technologies, from the sensors installed on the engine to a server. The Digital Twin, also operating on the server, is used to automatically process the acquired experimental data, accumulate statistics, determine the current technical state of the engine, identify possible malfunctions, and make decisions regarding changes in operating programs. The core element of the Digital Twin is a mathematical model of the marine diesel engine’s operating cycle. In its development, significant attention was devoted to refining the fuel combustion model, as the combustion processes significantly impact both the engine’s fuel efficiency and the level of toxic emissions of exhaust gases. The enhanced model differs from the base model, by considering the variable value of the average droplets’ diameter during fuel injection. This influence on fuel vapourisation, combustion, and the formation of toxic components is substantial, as shown. Using the example of calibrating the model to the test results of a diesel engine under 27 operating modes, it is demonstrated that the application of the improved combustion model allows better adjustment of the Digital Twin to experimental data, thus achieving a more accurate correspondence to a real engine.
Human Resource Management Digitalisation in Multidisciplinary Ship Design Companies
Authors: Bilon Piotr , Litwin Wojciech
Published: December 2023

The digitalisation in the ship design sector is currently applied to the design process itself and is well defined, partially standardised and practically implemented by both independent design companies and the design departments of shipyards. The situation is similar in other sectors of engineering. However, the requirements for the digitalisation of other processes in design and engineering companies have not previously been studied, and the limited financial resources of ship design companies mean that there is a need for research on the digitalisation needs of multidisciplinary ship design companies. The implementation of building information modelling (BIM) solutions is costly for design companies and generates benefits mainly for shipyards and shipowners. The lack of benefits for design companies leads to the hesitation of managers whenever digitalisation is considered; the scope and scale of the digitalisation, as well as the selected software and BIM level, are defined by the shipyard requirements. The participation and support of management in the digitalisation process is one of the key success factors; the expected benefits caused by digitalisation for the organisation will increase the motivation of managers to invest limited resources in digitalisation. There are no data that indicate the processes with a high potential for digitalisation and the scale of expected improvements in ship design companies; therefore, research in this area was performed with a group of project managers from design and engineering companies. The research focused on collecting the opinions and experiences of the managers related to the manual management of resources and comparing the poll results with the conclusions from the enterprise resource planning (ERP) system data analyses. The paper analyses if the digital automation of the resource management process can lead to the substantial improvement of the operations of multi-project, multidisciplinary engineering ship design companies.
Strategies for Developing Logistics Centres: Technological Trends and Policy Implications
Authors: Nguyen Minh Duc , Yeon Ko Tae , Rudzki Krzysztof , Nguyen Hoang Phuong , Pham Nguyen Dang Khoa
Published: December 2023

Logistics centres are currently performing a key function in the development of countries through their ability to regulate goods, markets, and transport. This is shown by the infrastructure, cost, goods flow, and quality of logistical services provided by these centres. Nevertheless, in developing nations or regions with antiquated logistics infrastructure, conventional logistics centres seem to struggle to manage the volume of commodities passing through them, resulting in persistent congestion and an unsteady flow of goods inside these facilities. This issue poses a challenge to the progress of any nation. The emergence of new technology offers a potential avenue to solve the problems inherent in traditional logistics centres. Most prominently, four technologies (the Internet of Things (IoT), Blockchain, Big Data and Cloud computing) are widely applied in traditional logistics centres. This work has conducted a thorough analysis and evaluation of these new technologies in relation to their respective functions and roles inside a logistics centre. Furthermore, this work proposes difficulties in applying new technologies to logistics centres related to issues such as science, energy, cost, or staff qualifications. Finally, future development directions, related to expanding policies in technological applications, or combining each country’s policies for the logistics industry, are carefully discussed.
Job Crafting dan Work Engagement pada Wanita Karir
Authors: Saputri Okta Silvyana , Prahara Sowanya Ardi
Published: December 2023

Abstrak

Perkembangan era digital dan globalisasi membawa dampak kenaikan tenaga kerja wanita di Indonesia yang terserap di beberapa sektor industri, khususnya sektor formal. Pekerja wanita di sektor formal cenderung memiliki aturan yang lebih mengikat. Aturan yang mengikat dan tuntutan untuk mengurus pekerjaan rumah seringkali membuat perempuan lebih bermasalah dalam bekerja. Oleh karena itu wanita bekerja menerapkan job crafting untuk menumbuhkan motivasi, lebih berkembang, profesional, dan lebih engage dengan pekerjaan. Tujuan dari penelitian ini adalah untuk mengetahui hubungan antara job crafting dan work engagement pada wanita karir. Penelitian ini merupakan penelitian kuantitatif dengan metode uji korelasi. Responden dalam penelitian ini adalah wanita karir yang bekerja di sektor formal di PT. X yang telah bekerja minimal 1 tahun (n=86) yang diperoleh melalui teknik analisis regresi linear berganda. Instrumen penelitian yang digunakan adalah Skala Job Crafting dan Skala Work Engagement. Hasil analisis dengan analisis regresi linear berganda diperoleh koefisien regresi sebesar 0,345 (p<0,050). Hasil ini menunjukkan bahwa ada hubungan positif signifikan antara job crafting dan work engagement pada wanita karir di PT.X.
Profitabilitas, Leverage dan Penghindaran Pajak
Authors: Wuriti Ni Made , Noviari Naniek
Published: December 2023

Tax avoidance is an activity to legally minimize tax payments but is not wanted by the government because it can lead to reduced state revenues. This research aims to obtain empirical evidence regarding the influence of profitability and leverage on tax avoidance. The theory used is the Theory of Planned Behavior (TPB). The population in this study are all mining companies listed on the IDX for the 2017-2021 period. The sampling technique used a purposive sampling method with a total of 60 samples obtained. The analysis technique used is multiple linear regression analysis. The results of this study indicate that profitability has a positive and significant effect on tax evasion, while leverage has no effect on tax evasion. The theoretical implications of this research are able to confirm the TPB based on the results of the tests that have been carried out. The practical implications of this research can provide knowledge that can be used as consideration for investors and the government.

Keywords: Profitability; Leverage; Tax Avoidance
IKABOGA Women Leadership Dan Komitmen Organisasi Sebagai Pemoderasi Determinan Akuntabilitas Pengelolaan Keuangan
Authors: Pituringsih Endar , Sokarina Ayudia , Asmony Thatok
Published: December 2023

The purpose of this study was to analyze and provide empirical evidence regarding the effect of presentation of financial statements and the effect of accessibility of financial reports on financial management accountability with women's leadership and organizational commitment as moderating variables. The population of this research is the management of IKABOGA organizations throughout the island of Lombok with a total of 60 respondents. Collecting data using a survey method in the form of a questionnaire. By using the census method, all populations become respondents. The data analysis method used in this study is the MRA (Moderate Regression Analysis) method with the help of the SPSS 23 program. The results show that the presentation of financial statements has a positive and significant effect on financial management accountability. The accessibility of financial reports has a positive and insignificant effect on financial management accountability. Women's leadership does not strengthen the influence of financial report presentation on financial report accountability. Women's leadership does not strengthen the influence of financial report accessibility on financial report accountability. Organizational commitment does not strengthen the influence of financial report presentation on financial management accountability. Organizational commitment does not strengthen the influence of financial report accessibility on financial management accountability.

Keywords: Presentation of Financial Statements; Accessibility of Financial Reports; IKABOGA Women Leadership; Organizational Commitment; Financial Management Accountability.
Kompetensi, Tekanan Anggaran Waktu, dan Kualitas Audit BPK dengan Etika Auditor sebagai Pemoderasi
Authors: Pradnyayani Gusti Ayu Agung Ista , Wirama Dewa Gede
Published: December 2023

Quality audits from the BPK are needed to ensure accountability and transparency over the use of state finances. This study aims to determine the effect of competence and time budget pressure on BPK audit quality and to determine whether auditor ethics moderates the effect of competence and time budget pressure on BPK audit quality. The research population consisted of 72 BPK RI auditors representing Bali Province with the sample determined using a purposive sampling technique. Variable measurements were carried out using a questionnaire with a 4 point Likert scale. The collected data was analyzed using moderated regression analysis. The results showed that competency had a positive effect on BPK audit quality, time budget pressure had no effect on BPK audit quality, and auditor ethics did not moderate the effect of competence and time budget pressure on BPK audit quality.

Keywords: Competence; Time Budget Pressure; Auditor Ethics; Audit Quality