bluuebunny/crossref_metadata_2025_split huggingface dataset:
Establishment of a nomogram model in predicting risk factors of post-operative complications after laparoscopic anterior resection for rectal cancer
Authors: Huang Zhulan , Li Peng , Tang Min , Liu Jianya 
Published: May 2023

Abstract

Objective:
We aimed to analyse the risk factors of complications after laparoscopic anterior resection of rectal cancer, and to establish a nomogram prediction model and evaluate its accuracy.

Patients and Methods:
We retrospectively analysed the clinical data of 180 patients undergoing laparoscopic anterior resection of rectal cancer. Univariate analysis and multivariate logistic regression analysis were used to screen the potential risk factors of post-operative complications of Grade II and establish a nomogram model. The receiver operating characteristic (ROC) curve and Hosmer–Lemeshow goodness-of-fit test were used to evaluate the discrimination and coincidence of the model, and the calibration curve was used to internally verify.

Results:
A total of 53 patients (29.4%) with rectal cancer had Grade II post-operative complications. Multivariate logistic regression analysis showed that age (odds ratio [OR] =1.085, P < 0.001), body mass index ≥24 kg/m2 (OR = 2. 763, P = 0. 008), tumour diameter ≥5 cm (OR = 3. 572, P = 0.002), tumour distance from anal margin ≤6 cm (OR = 2.729, P = 0.012) and operation time ≥180 min (OR = 2.243, P = 0.032) were independent risk factors for Grade II post-operative complications. The area under the ROC was 0.782 (95% confidence interval: 0.706–0.858, sensitivity: 66.0%, specificity: 76.4%) in the nomogram prediction model. Hosmer–Lemeshow goodness-of-fit test showed χ
2 = 9.350, P = 0.314.

Conclusion:
Based on five independent risk factors, the nomogram prediction model has a good predictive performance for post-operative complications after laparoscopic anterior resection of rectal cancer, which is helpful to early identify high-risk people and formulate clinical intervention measures.
The outcome of 100 patients with achalasia cardia following laparoscopic Heller myotomy with blunt dissection technique
Authors: Chauhan Vivek , Nekarakanti Phani Kumar , Balachandra Deepak , Choudhary Devendra , Sachdeva Sanjeev , Nag Hirdaya Hulas 
Published: May 2023

Background:
Laparoscopic Heller myotomy (LHM) can be performed by blunt dissection technique (BDT). Only a few studies have assessed long-term outcomes and relief of dysphagia following LHM. The study reviews our long-term experience following LHM by BDT.

Methods:
This retrospective study was analysed from a prospectively maintained database (from 2013 to 2021) of a single unit of the Department of Gastrointestinal Surgery at G. B. Pant Institute of Postgraduate Medical Education and Research, New Delhi. The myotomy was performed by BDT in all patients. A fundoplication was added in selected patients. Post-operative Eckardt score >3 was considered treatment failure.

Results:
A total of 100 patients underwent surgery during the study period. Of them, 66 patients underwent LHM, 27 underwent LHM with Dor fundoplication and 7 underwent LHM with Toupet fundoplication. The median length of myotomy was 7 cm. The mean operative time was 77 ± 29.27 min and the mean blood loss of 28.05 ± 16.06 ml. Five patients had intraoperative oesophageal perforation. The median length of hospital stay was 2 days. There was no hospital mortality. The post-operative integrated relaxation pressure (IRP) was significantly lower than the mean pre-operative IRP (9.78 vs. 24.77). Eleven patients developed treatment failure, of which ten patients presented with recurrence of dysphagia. There was no difference in symptom-free survival amongst various types of achalasia cardia (P = 0.816).

Conclusion:
LHM performed by BDT has a 90% success rate. Complication using this technique is rare, and recurrence post-surgery can be managed with endoscopic dilatation.
Acceptance, Hesitancy, and Refusal of Coronavirus Disease 2019 Vaccine and Associated Factors in the Population of Libya: A Cross-Sectional Study
Authors: Ismail Faisal , Farag Atiya , Alsharif Fatma , Albakoush Ashraf , Haq Soghra , Zorgani Abdulaziz 
Published: May 2023

Background and Aims:
To obtain herd immunity and control the coronavirus disease 2019 (COVID-19) infection, a large proportion of the population must be vaccinated. However, not everyone in Libya believes in the necessity or safety of COVID-19 vaccines. Therefore, understanding the reasons and variables impacting vaccine hesitation in the Libyan population will assist in developing strategies to reduce this hesitation and achieve better vaccination levels in the country. This study aimed to investigate the acceptance, hesitancy, and refusal of the COVID-19 vaccine and the factors that influence COVID-19 vaccine hesitancy and denial in the Libyan population.

Methods:
A cross-sectional survey using a snowball sampling strategy to collect data was conducted between February and May 2022. Descriptive statistics and the Chi-square test were used for data analysis. Study questionnaires were distributed using social media.

Results:
The overall COVID-19 vaccine acceptance was 39.7%, vaccine hesitancy was 36.6%, and vaccine refusal was 23.6% among the study participants. The highest refusal rate was among participants aged 12–24 years, 49 out of 91 (53.8%). Vaccine refusal was similar in males and females; however, vaccine acceptance was higher among females than males. Vaccine acceptance was higher in people with a higher graduate degree than those less educated (P = 0001).

Conclusion:
Our findings show that vaccine hesitancy was 36.6% and vaccine refusal was 23.6% among the study participants. The study identified reasons for vaccine hesitancy and refusal and proposed education programs to address misbeliefs about the COVID-19 vaccine, allowing people to make informed decisions.
The Effects of Disinfection with Er, Cr
Authors: Ersan Z , Yazicioğlu I , Serin AB , Doğan MC 
Published: May 2023

Background:
The effects of commonly used antimicrobial and anticariogenic agents on the adhesion of pit and fissure sealants were investigated in this study.

Aims:
The aim of this study is to evaluate the effects of erbium, chromium: yttrium-scandium-gallium-garnet (Er, Cr:YSGG) laser disinfection, casein phosphopeptides–amorphous calcium phosphate (CPP–ACP) containing paste and sodium hypochlorite application before the placement of a resin-based pit and fissure sealant on the shear bond strength of primary tooth enamel.

Materials and Methods:
The shear bond strength test evaluated the bond strength of sealants on the buccal enamel surfaces of primary molar teeth. The study groups were pit and fissure sealant without any preapplication, pre application of disinfection with Er, Cr:YSGG laser, disinfection with Er, Cr:YSGG laser and CPP–ACP containing paste, sodium hypochlorite, sodium hypochlorite and CPP–ACP containing paste and CPP–ACP containing paste. The pit and fissure sealants were placed using 4 mm diameter, 2 mm height cylindrical plastic tubes. Shear force was applied to each sample. The surfaces of the broken samples were detected under stereomicroscope and were grouped as adhesive, cohesive, and mixed. The results of the study were evaluated using the SPSS 16.0 package program for statistical analysis

Results:
The groups where sodium hypochlorite and sodium hypochlorite with CPP-ACP were applied showed the lowest bond strength (p < 0.05). It was observed that most of the failures in these groups were adhesive-type failures. No significant difference was observed between the shear bond strengths of the other groups (p < 0.05).

Conclusions:
Er, Cr: YSGG laser and CPP-ACP containing paste are alternative methods for pre-application of fissure sealants.
Study of Pharyngeal Airway Morphology with CBCT
Authors: Fang MR , Yan XZ , Ni JL , Gu YG , Meng L , Yuan LC , Cai HY , Wang LR , Qin JW , Cai Q , Zhang Y , Guo SY 
Published: May 2023

Background and Aim:
Four premolars extractions are routine procedures for correction of malocclusion, but will inevitably lead to a reduction of tongue space, whether this will weaken the pharyngeal airway remains a controversy.

Patients and Methods:
Cone-beam computed tomography (CBCT) radiographs of 80 patients who completed four premolar extraction orthodontic treatments were collected and divided into three anteroposterior skeletal groups according to the ANB (angle subspinale to nasion to supramentale) value. Linear, angular, cross-sectional area, and volumetric dimensions of the pharyngeal airway were measured using Dolphin Imaging 11.9 software. One-way analysis of variance and Pearson's correlation coefficient test were performed to assess the intergroup comparisons. Treatment changes were evaluated with two-sample t-tests.

Results:
In intergroup comparisons, vertical linear and cross-sectional area differences were identified in S-Go/N-Me, VD1, VD1/N-Me, VD2/N-Me, AA, OAA and OMINI (p<0.05), while other measurements showed no significant differences. Angle2, the tilting degree of the pharyngeal airway, showed a positive correlation with ANB (p<0.05). As for the treatment changes, a significant increase was found in the pharyngeal airway in the Class I group (OUA p<0.05, VD1 p<0.001, VD2 p<0.05) and Class II group (VD1 p<0.001. VD2, p<0.05), and inversely, a significant decrease was found in the pharyngeal airway in the Class III group (OAA p<0.05, OMINI p<0.05, OUA p<0.05). No volumetric difference was identified. Interestingly, regarding the preoperative pharyngeal airway size, values trended to the mean value significantly.

Conclusion:
Four premolar extraction orthodontic treatments did not affect the pharyngeal airway volume except for the vertical liner and cross-sectional area dimensions. The trend of the gold standard suggested a positive influence of four premolar extraction orthodontic treatments.
Evaluation of the effect of anodization-colored titanium abutments and zirconia substructure thickness on zirconia substructure color
Authors: Bas BB , Cakan U 
Published: May 2023

Background and Aim:
The aim of this study is to evaluate the effect of anodized titanium abutments and zirconia substructure thickness on the color of zirconia substructure.

Materials and Methods:
In this study, an electrochemical anodization setup was prepared for titanium coloring. Commercial titanium, anodization-colored yellow and pink titanium, and zirconia were used as different abutment specimens. Thirty zirconia discs in 0.7, 0.9, and 1.1 mm thickness were prepared from zirconia blocks as zirconia substructure specimens (n = 10). Zirconia substructure specimens of different thicknesses were placed on abutment specimens of different colors and L*, a*, b* values were measured with a spectrophotometer device. Color difference (ΔE) was calculated according to the CIELab formula by comparing the L*, a*, and b* values obtained on the zirconia abutment with the L*, a*, and b* values obtained on the other abutments. Statistical analyzes were performed with two-way analysis of variance and Tukey Honestly Significant Difference (HSD)test (p < 0.05).

Results:
The increase in the thickness of the substructure resulted in a statistically significant difference on ΔE, L*, a*, and b* values (p < 0.001). The effect of abutment color had no significant effect on ΔE values. The highest ΔE value was 18.10 at zirconia substructure with 0.7 mm thickness when paired with pink-anodized titanium abutment specimens.

Conclusion:
The thickness of zirconia substructure and the color of titanium abutments affect zirconia substructure color.
Effect of nutritional-deficiency anemia on peripapillary retinal nerve fiber layer: A North Indian study
Authors: Gupta Sushobhan Das , Dhawan Aeshwarya , Kakkar Ashish , Shakeel Tarannum , Verma Amit 
Published: May 2023

Abstract

PURPOSE:
The purpose of this study was to evaluate the effect of nutritional-deficiency anemia (NDA) on peripapillary retinal nerve fiber layer thickness (PPRNFLT) using spectral-domain optical coherence tomography and to determine any correlation arising thereof. This was a single-center, cross-sectional, observational study.

MATERIALS AND METHODS:
A total 115 eyes of 115 NDA patients (50 of each with iron-deficiency anemia [IDA] and Vitamin B12-deficiency anemia [BDA], and 15 with folic acid-deficiency anemia [FDA]) aged 18–65 years were compared with a total 100 eyes of 50 age- and sex-matched healthy controls. All subjects underwent comprehensive clinical, ophthalmic, and hematological evaluation, followed by PPRNFLT assessment for the mean total, superior, inferior, nasal, and temporal quadrants.

RESULTS:
PPRNFLT for the mean total and all four quadrants in IDA patients, for the mean total, inferior, nasal, and temporal quadrants in BDA patients, and for the mean total, inferior, and nasal quadrants, in FDA patients, was significantly lower as compared to the controls (P < 0.05). The mean total PPRNFLT of all NDA patients correlated significantly (P < 0.05) with their relevant hematological parameters with Pearson’s coefficient (r) value of 0.613, 0.610, 0.336, 0.295, 0.337, 0.374, and − 0.509, respectively, for serum haemoglobin (Hb), iron, ferritin, mean corpuscular volume (MCV), mean cell hemoglobin, mean corpuscular hemoglobin concentration, and total iron binding capacity in IDA; 0.310, 0.435, and − 0.386, respectively, for serum Hb%, Vitamin B12, and MCV in BDA; and 0.557, 0.358, and − 0.294 for Hb%, folate, and MCV, respectively, in FDA cases. Mean total retinal nerve fiber layer thinning of all NDA patients showed progression with the increasing severity grades of anemia, except in very severe BDA where an inverse relationship was documented.

CONCLUSION:
Our study revealed that PPRNFLT is significantly thinner in all NDA patients (total and all four quadrants in IDA; total, inferior, nasal, and temporal in BDA; and total, inferior, and nasal in FDA) correlating well with their relevant hematological parameters. Early detection of this may be crucial in preventing potential blinding sequelae and differentiating glaucomatous and other neuro-ophthalmic disorders.
Anterior lamellar recession versus bilamellar tarsal rotation in upper lid cicatricial trichiasis
Authors: Ezzeldin Ezzeldin Ramadan , Elgazzar Akram Fekry , Hussein Mostafa Osman , Abbas Ibrahim Ezzat Nabil , Tharwat Ehab 
Published: May 2023

Abstract

PURPOSE:
In recent years, there has been a significant shift from this destructive procedure to a reconstructive procedure such as anterior lamellar recession (ALR) and bilamellar tarsal rotation (BLTR). The aim is to report the outcomes and success rates of ALR compared to BLTR in patients with upper lid cicatricial trichiasis.

MATERIALS AND METHODS:
Our study is a prospective, interventional, comparative study that was conducted at the Ophthalmology Department of Al-Azhar University Hospital, New Damietta, Egypt. Our study was conducted on 62 eyes of 45 consecutive patients suffering from upper lid cicatricial trichiasis that required surgical intervention (17 patients were bilateral and 28 were unilateral). Thirty-three of them were treated by ALR (group 1), and 29 of them by BLTR (group 2). All statistical analysis was performed using the SPSS version 26.

RESULTS:
As regards the immediate postoperative correction, we found that adequate correction was significantly higher in the ALR group at all follow-up periods (P < 0.05). However, the overcorrection and undercorrection were significantly higher in the BLTR group (P < 0.05). Compared to the ALR group, the BLTR group saw a greater undercorrection at 1, 3, and 6 months (9.3%% vs. 0%; P = 0.048, 18.6% vs. 1.8%%; P = 0.009, 18.6%% vs. 1.8%; P = 0.009, 18.6%% vs. 1.8%; P = 0.009, respectively).

CONCLUSION:
ALR is better than BLTR in the treatment of upper lid cicatricial trichiasis.
The influence of forest tree species composition on the forest height predicted from airborne laser scanning data – A case study in Latvia
Authors: Ivanovs Janis , Lazdins Andis , Lang Mait 
Published: May 2023

Airborne laser scanning (ALS) is used to predict different forest inventory parameters; however, the ALS point cloud properties depend on various parameters such as the type of ALS scanner employed, flight altitude and scanning angle, forest stand structure, forest tree species composition, vegetation season, etc. This study used national coverage high-resolution ALS data with minimum point density of 4 points per square meter in combination with field data from the National Forest Inventory (NFI) to build forest stand height models for forest stands dominated by 6 most common tree species in Latvian mixed forest stands, viz. Pinus sylvestris L., Betula pendula Roth, Picea abies (L.) Karst., Populus tremula L., Alnus incana (L.) Moench and Alnus glutinosa (L.) Gaertn. for the various ALS scanners employed and at different growing seasons. The selected NFI plots are divided into modelling and validation datasets in a ratio of 3 : 1. The results show that for a universal forest stand height model, the RMSE value is 1.91 m and the MAE is 1.41 m. For the forest stand height models, which are stratified by scanner, individual tree species and seasons, the RMSE value is within the limits of 1.4 m for forest stands dominated by Scots pine in leaf-on canopy condition to 3.8 m for birch in leaf-off canopy condition.
Key words: forest inventory, airborne laser scanning, phenology, large scale forest mapping
Memorial Landscape of the Ural Town in the Material of Folklore Archive (Kaslee, 1970‑1980)
Authors: Gramatchikova Natalia B. 
Published: May 2023

The article considers the possibility and limits of reconstructing the memorial landscape of the Ural town-factory based on the materials of student folklore practical studies in the late Soviet era. The author reveals the stable motifs of the legends connected with the history of the founding of the industrial settlement of Kaslee, as well as with the specifics of the ethnic interaction between Russian settlers and the local population. The article also defines the “places of memory” in folklore materials. The study shows how the scientific and methodological attitudes of folklorists and the methods of interaction between collectors and informants are reflected in the collection of field archival materials from a particular area.
The memorial landscape reconstructed according to folklore data tells both about the past of Kaslee and the present, as the perspective of such a description of the past is determined by the present. Archival folklore materials are an example of a combination of practices of communicative and cultural memories. In this aspect, the place of “songs about the city” is also determined in the article. The authors believe that “empty cells” – lacunae of archival memory, about which the informants did not tell and/or the collectors did not ask, are significant elements of this memorative landscape. The stories related to the accident at the Mayak chemical plant in 1957 and the environmental agenda in general become such subjects of silence.
The article will be useful to folklorists and anyone interested in the problems of memory in folklore materials, as an attempt to apply the methods of folklore and anthropology to the practice of memory studies.
Military-Administrative and Demographic Aspects of the Kuban Cossack Settlements Formation on the Adagum Cordon Line in the Trans-Kuban (1860s)
Authors: Fedina Irina M. 
Published: May 2023

Based on documentary materials, this paper reviews the development of Northwestern Caucasus by the Cossacks in the 1860s. For the development of new territories, a defensive-offensive strategy was used. With the help of fortified settlement structures, the advancement and retention of Russian borders in the trans-Kuban areas were carried out.
The “inducted” settlements are of particular interest because they were invariably tied to the cordon lines during the settlement period of the Trans-Kuban region. Among them, Cossack villages were the most stable settlement type. The focus of the scientific problem is the civil-settlement aspect and the military-organizational narrative of the Adagum cordon line. Historical settlements arose from a complex interweaving of politics and geography, power, and settlement modus vivendi, reflecting not only the Cossacks' way of life but also their identity.
The purpose of this paper is to analyze and determine the significance of the Cossack settlement structures throughout the regional historical process to understand the process of development of the Trans-Kuban areas and the emerging network of fortification objects with key settlement structures in the form of fortified stanitsa settlements, as well as the penetration of Russian influence into a new area of the historical region of Kuban.
This article is intended for historians and anyone interested in the history of the Cossacks.
analysis of the Technology Acceptance Model TAM in understanding Faculty’s behavioral intention to use Internet of Things IOT
Authors: Alzahrani Abdulaziz 
Published: May 2023

The study focuses on examining faculty members’ self-efficacy in two departments – Instructional Technology and Computer Science – in using the Internet of Things (IoT) in Saudi universities. To achieve the study’s goal, the Technology Acceptance Model (TAM) was used to test the effect of self-efficacy in the use of the IoT in education. TAM includes the following variables: Faculty Members’ Self-efficacy (FMSE), Perceived Usefulness (PU), Perceived Ease of Use (PEOU), Attitude (AT), and Behavioral Intention to Use IoT (BI). The study consists of quantitative research, and the instrument used was a survey developed to measure faculty members’ self-efficacy. The results showed that faculty members who have more confidence in their technology skills are more likely to view IoT technology as beneficial. Perceived ease of use affected both perceived usefulness and attitude toward adopting the IoT. However, perceived usefulness failed to affect attitude, and attitude does not influence behavioral intention to adopt IoT technology.