bluuebunny/crossref_metadata_2025 huggingface dataset:
Impact of Hypotonizing Treatment in Patients with Glaucoma on the Ocular Surface: About 52 Patients
Authors: Tenouri Soukaina , Saidi Hind , Bennis Ahmed , Chraibi Fouad , Abdellaoui Meriem , Andaloussi Idriss Benatiya
Published: April 2022

Ocular surface disease (OSD) and glaucoma are common comorbidities in the same patient. Thus, the long-term instillation of topical intraocular pressure lowering drops induces changes in the ocular surface. For this, we have realized a cross-sectional study of 52 patients, collected at the ophthalmology department of the Hassan II University Hospital Center at Fez, Morocco. We have included all patients with glaucoma or ocular hypertonia on hypotonizing treatment for at least 06 months. They have answered the Ocular Surface Disease Index (OSDI) after their consent. All patients have been then examined with a slit lamp by the same ophthalmologist to assess the severity of the OSD. A total of 101 eyes from 52 patients were analyzed. Thirty-six (69%) patients treated with hypotonizing eye drops required multitherapy. Only nine (17%) patients were on preservative-free eye drops. The average OSDI score was 32.4/100 (0—82.5). According to clinical classification, 27 (52%) patients had severe OSD. This study confirms the high frequency of the OSD in patients medically treated for glaucoma or ocular hypertonia. Damage on the ocular surface is responsible for disabling symptoms that can affect both the quality of life of patients and adherence to the treatment. Thus, any ophthalmologist should systematically include the evaluation of the ocular surface in glaucomatous patients.
Hypertensive Chorioretinopathy
Authors: Kasuya Yuka , Makino Shinji
Published: April 2022

A 54-year-old man was referred to the ophthalmology unit for blurring of vision in both eyes. On ophthalmic examination, his best-corrected visual acuity (BCVA) was 0.1 in the right eye and 0.7 in the left eye. Fundoscopy revealed disc swelling, cotton-wool spots, superficial retinal hemorrhages, and macular edema with hard exudates in both eyes. Optical coherence tomography (OCT) showed marked serous retinal detachment, involving the fovea, and cystic change of the inner retinal layer in both eyes. We diagnosed the condition as hypertensive retinopathy with marked serous retinal detachment caused by hypertensive choroidopathy. His blood pressure was 189/116 mmHg. There was no secondary cause of hypertension. Two months after resuming his regular medications, his BCVA improved to 0.6 in the right eye and 1.0 in the left eye, with regression of fundus changes, including serous retinal detachment. In malignant hypertension, both retinopathy and choroidopathy can occur, which can be detected on OCT.
Ethmoid Maxillo Orbital Alveolar Rhabdomyosarcoma: Case Report and Review of the Literature
Authors: Esdras Zongo Pawendtaoré , Nezha Tawfiq , Abdellahi Deddah Mohamed , Hajar Kaddouri , Tarek Chekrine , Mouna Bourhafour , Zineb Bouchbika , Nadia Benchekroun , Hassan Jouhadi , Souha Sahraoui , Mariem Regragui
Published: April 2022

Introduction: Rhabdomyosarcoma is a soft tissue sarcoma, of unknown etiology. It is divided into two entities: embryonic rhabdomyosarcoma and alveolar rhabdomyosarcoma. The latter is common in adults and very aggressive. It’s a lymphophilic tumour with 15 to 50% lymph node involvement. Immunohistochemistry is crucial for differentiating an alveolar form an embryonic one. However molecular biology must be performed before any treatment. Management is multidimensional, combining chemotherapy, radiation therapy and surgery. The objective of this presentation is to show the aggressive character of alveolar rhabdomyosarcoma as well as the evolution, therapeutic strategies with a review of the literature. Case presentation: 27-year-old patient consults for swelling in the right eye associated with exophthalmia, pain and redness of the eye with a decrease in visual acuity. Clinical examination noted a mass of the right eye with exophthalmia, and the radiologic examination of CT and magnetic resonance imaging revealed an ethmoido-maxillo-orbital process. Histology and the immunohistochemistry of the biopsy confirmed that it is an alveolar rhabdomyosarcoma with expression of desmin and myogenin. The extension assessment came back negative. Neoadjuvant chemotherapy with Vincristine, Actinomycin, Cyclophosphamide, Ifosfamide and Etoposide and 54 Gy radiotherapy was performed with good clinical response, visual acuity in both eyes and radiological stability, and the patient was monitored. With a follow-up of 4 months, she presents a local relapse confirmed by an anatomical pathology examination with chemotherapy like Adriamycin, Cisplatin, Ifosfamide/ Adriamycin, Ifosfamide and a waiver of Right eye. After two other locoregional relapses, she was admitted to the palliative care unit. Conclusion: Alveolar rhabdomyosarcoma is an aggressive tumour that requires multimodal management. Despite the combination of chemotherapy, radiation therapy and surgery, the prognosis remains ....
Bladder Neck Preserving Resection of a Prostatic Urethral Fibroepithelial Polyp in a Young Man: A Case Report
Authors: Jaradat Ahmad , Abatli Safaa , Abushamma Faris , Aghbar Amir
Published: April 2022

Prostatic urethral fibroepithelial polyps are quite rare congenital lesions of the male urethra. Most cases have been described in children. However, adult cases have also been reported. Herein, we report a case of a 24-year-old male who presented with voiding lower urinary tract symptoms and was finally diagnosed to have a prostatic urethral fibroepithelial polyp. He was treated with a bladder neck preserving transurethral resection, with no recurrence after one year of follow-up. The rare cause, in addition, the modified approach, encouraged us to report this case.
Beneficial Effect of the Hydroxychloroquine or Chloroquine/Azithromycin Combination in Patients with COVID-19: Results of an Observational Study
Authors: Nokra M. , Aitbatahar S. , Amro L.
Published: April 2022

One hundred and three patients with COVID-19 received chloroquine or hydroxychloroquine/ azithromycin combination between March 24 and May 26, 2020. The dosages of hydroxychloroquine and azithromycin were in accordance with the protocol of the Moroccan Ministry of Health. The mean age of our series was 43.7 ± 16 years, and males were the most affected (55%). 19 patients had comorbidities, dominated by arterial hypertension (10.7%), diabetes (7.8%), and pulmonary pathologies (4.9%). Seventy-seven patients were asymptomatic (74.8%). Dry cough was the main functional symptom in our series (55.3%). The most predominant scan appearance was isolated ground glass areas. The majority of patients in our series (52%) were under chloroquine/azithromycin, while 43% of patients were under hydrochloroquine/azithromycin, all patients benefited from adjuvant treatment with vitamin C & D and Zinc. During the treatment period, 39 patients representing 38.6% of the cases showed side effects of the treatment, with an average delay of 4.6 days, the most common side effects were: gastrointestinal affections in 21.4% of the cases, hepatobiliary affections in 12.6% of the cases. Nine people died (8.8%). All other patients who received the HCQ/AZT combination were considered cured in 37.6% of cases only at D 9, with a mean hospitalization time of 17 days (10-40 days).
Pregnancy Due to Drepanocytosis with Maternal and Fetal Complications: Clinical Case and Focus
Authors: Mariko S , Coulibaly P , Sanata S , Doumbia N , Traoré A , Coulibaly MB , Bagayogo NS , Haїdara M , Khalil S , Sidibé A , Tembiné K , Traoré M , Saye A , Traoré M , Bourama K
Published: April 2022

The aim was to describe the monitoring and management of maternal and fetal complications of this composite SC sickle cell pregnancy. Pregnancy is a high risk situation for a woman with sickle cell disease and for her fetus. Management must be multidisciplinary and involve obstetricians, doctors specializing in sickle cell disease, hematologists, organ specialists, anesthetists, resuscitators, midwives. Sickle cell disease can make pregnancy worse, but pregnancy can also make the disease worse. Ocular involvement of sickle cell anemia is common, particularly in SC and Sβ+-thalassemic sickle cell patients. The severity of ophthalmologic complications is mainly linked to these proliferative retinal manifestations. Laser treatment is used to control the growth of new blood vessels in the eyes affected by this disease. We report the case of a major sickle cell pregnancy with fortuitous discovery of maternal retinopathy and intrauterine growth retardation in the fetus. From this case we will describe the problems that can cause this category of pregnancy and make an update on the management.
Giant Ethmoidal Rhinolith: A Case Report
Authors: Hanine M. A , Akhiri M. El- , Aljalil A. , Benchafa I. i , Ammar H. , Darouassi Y. , Touati M.
Published: April 2022

Rhinolithiasis is a rare condition with an unrecognized etiopathogenesis. We discuss the case of an adult cocaine user complaining of chronic headache with chronic left unilateral nasosinus symptoms. The blonde scan revealed ethmoidal calcium opacity. The extraction was performed by endonasal endoscopy under scannographic identification by digipointer. The postoperative follow-up is simple. The course is favorable with disappearance of nasosinus symptoms and pain, without signs of recurrence three years later.
Tuberculosis and COVID 19 Coinfection
Authors: Aazri Dr. Loubna , Aitbatahar Salma , Amro Lamyae
Published: April 2022

The ongoing pandemic of novel corona-virus disease 2019 (COVID-19) has received worldwide attention by becoming a major global health threat. The tuberculosis and SARS-COV2 co-infection has not been frequently reported. The purpose of this work is to establish a focus on Tuberculosis and SARS-COV2 co-infection, to study the impact of HIV infection on the occurrence of COVID-19, and evaluate the place of BCG vaccination in reducing the morbidity and mortality linked to Covid-19. We reported three cases of co-infection tuberculosis and covid 19, in one case an HIV infection was noticed. The tuberculosis was pleural in the first case, multifocal in the second case and a miliary in the third case. The treatment consisted of antibacillaries, azithromycin and hydroxychloroquine with a favorable evolution. through published studies, we noticed that persons with active or latent TB have increased susceptibility for SARS-CoV–2 infection associated with rapid progression and severe involvement. Patients with severe immune-deficiencies, may be at risk for a severe course of COVID-19 disease. Regarding efficiency of BCG vaccination, limited data are available and does not confirm the existence of a protective effect of BCG against COVID-19.
Perineal Hernia another Complication That Influences the Quality of Life after Amputation of the Rectum: Case Report
Authors: Ters Jalila , Bouardi Nizar El , Bouhaddouti Hicham El , Benjelloun El Bachir , Ousadden Abdelmalek , Taleb Khalid Ait , Ouaddii Mouaqit
Published: April 2022

Introduction: Perineal eventration or perineal hernia is a protrusion of the pelvic floor containing intra-abdominal viscera. The occurrence of postoperative perineal hernia after abdominoperineal resection (APR) is rare, but has increased recently affecting the quality of life of the patient. Presentation of case: Here, we report a 68 -year-old women with history of myomectomy was diagnosed with a low rectal cancer. She has abdominoperineale resection after radiotherapy. She was operated for white line hernia 2 years after with mesh fixation. She presented to us 5 months after the operation, with perineal bulge and discomfort. The diagnosis of a perineal hernia was made clinically and was complemented by a CT scan. Abdominal CT scan showed that part of the small intestine was slightly protruding from a large defect of the pelvis. Discussion: Recurrence rates of perineal eventration has increased recently. Many approaches have been described, but there is still no consensus as to the optimal repair technique for perineal eventration. Conclusion: This case report confirm that perineal eventration is frequent in women such as literature with other risk factors like APR radiotherapy and a history of pelvic surgery.
Abdominal Tuberculosis Mimicking Cancer: About Two Cases
Authors: Aouroud Meryem , Khaili Asmaa N’ , Chakor Fatima-Ezzahra , Semlali Riad , Errami Adil Ait , Oubaha Sofia , Samlani Zouhour , Krati Khadija
Published: April 2022

Abdominal tuberculosis can simulate a malignant tumor pathology, due to the non-specificity of clinical signs, especially in the context of deterioration of the general condition. The existence of associated lung involvement and progress of tuberculosis may point to the diagnosis. We represent two observations of abdominal tuberculosis, the 1st is related to intestinal tuberculosis which simulated a tumor process of the transverse colon, for the 2nd observation we put the point on a peritoneal tuberculosis which the diagnostic was performed by the histological proof, the evolution was marked by a good improvement under treatment, the interest in taking into account the diagnostic difficulties of abdominal tuberculosis, even in countries of endemic in order to avoid any diagnostic delay.
A Rare Cause of Conductive Hearing Loss, the Middle Ear Osteoma
Authors: Benzalim M , Alj M.C Ahmana S
Published: April 2022

Osteomas are benign and frequent bone tumors. Temporal bone osteomas are usually located to the external auditory canal, their location at the middle ear is rare. They are usually revealed by progressive hearing loss. We report the case of a 40-year-old woman who had a right ear conductive hearing loss. A CT-scan showed a bone-density tumor in the right antrum and posterior mesotympanum, hanging up to the tegmen tympani. The diagnosis of middle ear osteoma had been confirmed histologically after a surgical exploration. Middle ear osteomas are rare benign tumors, less than 36 cases was described from 1964. They always present with a hearing loss, and the diagnosis is made by CT-scan. The treatment is usually surgical for symptomatic patients.
An Incisional Bladder Hernia Following Inguinal Bowel Hernia Reduction Surgery
Authors: Najwa AMSIGINE , Salma EL HOUSS , Ismail HALFI Mohamed , Zahra Amrani Fatima
Published: April 2022

An incisional hernia is an iatrogenic condition where an abdominal organ protrudes from its normal location via a defect of the abdominal fascia. The factors involved in it pathogenesis include one related with the patient and his medical history , others with his surgical history in addition to postoperative complications .The incidence of an incisional hernia is estimated to be about 4 % following abdominal operations even less after scarpa or inguinal related operations. Moreover, usually the small intestines are the most frequently herniated organs. The present report describes a case of incisional bladder hernia following an bowel hernia reduction, and also provides a review of the pertinent recent literature.
Controlling Herpes Zoster-Associated Pain Using an Electrical Stimulating Catheter with a Steering Guidewire: A Case Series
Authors: Hong Seong Soo , Suh Dae Hee , Choi Eun-ha , Kim Jung Eun , Hong Sung Jun
Published: April 2022

Background: Treatment of herpes zoster not only includes antiviral therapy but also treatment of herpes zoster-associated pain. Severe herpes zoster-associated pain often limits a patient’s activities of daily living and may significantly lower functional status and quality of life. It also functions as an important predictor of postherpetic neuralgia. Thus, effective treatment of zoster pain is highly necessary. The effectiveness of a drug may depend on the method of administration, with each route having merits and limitations. Accurate epidural drug delivery directly into an affected spinal segment can maximize the effects of the drug, while minimizing systemic adverse drug effects. Here, we present three cases of successful control of zoster pain using an electrical stimulating catheter with a steering guidewire. Case Presentation: We treated three patients suffering from herpes zoster with continuous segmental block using an electrical stimulating catheter. The first case involved a 54-year old man with severe right-sided low back and thigh pain, the second patient was a 72-year-old woman suffering from multiple painful grouped vesicles on the left flank, the third patient was a 72-year-old man with multiple vesicles on the right arm. The three patients were treated with continuous segmental block via an electrical stimulating catheter, which was able to localize stimulation to the affected spinal segment. There were no procedure-related complications, and the pain levels of the patients decreased significantly. Conclusions: Continuous segmental block through electrical stimulation using an electrical stimulating catheter with a steering guidewire can be precisely positioned, providing targeted drug delivery and effective management of herpes zoster.
Socioeconomic Survey and Physicochemical Parameters of Chicken Eggs concerning the Breeding Systems in Cameroon
Authors: Kouatcho François Djitie , Bachirou Mohamadou , Razvan Mihail Radu-Rusu , Clergé Tchiegang
Published: April 2022

Physicochemical characteristics of eggs are still poorly controlled in poultry farming in the city of Ngaoundéré, Cameroon. The present study was thus conducted to characterize the rearing systems in modern poultry farming and to analyze the physicochemical characteristics of eggs from hens reared in deep litter, battery, and backyard systems from August to October 2020 in Ngaoundéré, Cameroon. To this end, 33 farms with approximately 61100 hens (Cobb500 broiler and layer) were surveyed. At the end of this survey, a sample of 180 eggs was collected, with 60 eggs per system for physicochemical analyses. Data included socio-economic and technical characteristics of modern farming systems as well as the physicochemical parameters of the eggs. The obtained results indicated that 90.9% of Cobb500 chicken owners were men. Of the total of the layer’s buildings, 73% were equipped with nests. The materials used for feeders were made of wood (54.4%), plastic (21.2%), or cement (6.1%). Moreover, 81.1% of the poultry farmers buy chicken feed on the market while the others prepare their own feed from various ingredients. Preventive and curative prophylactic measures were applied by all livestock farmers, yet 54. 5% were still victims of different diseases. The selling price of a 45-day-old broiler chicken was between 4 and 6 USD, while the price of a 30-egg tray varied between 3 and 4 USD, which contributed to 60-80% of family income for 54.5% of poultry farmers. The high feed cost as well as lack of finance, ingredients, and security were the main issues of poultry farming. Concerning the physicochemical characteristics of eggs, a significant increase in egg weight was noted among backyard (43.50 ± 3.15 g), battery (58.19 ± 4.02 g), and deep litter (63.51 ± 3.91 g) systems. The Haugh’s Unit of eggs in the backyard system (72.33 ± 4.42%) was significantly lower than deep litter (82.91 ± 6.76%) and battery systems (86.83 ± 11.42%). The proportions of eggshell and edible contents were similar in all production systems. Yolk lipid (17.63%) and yolk protein (7.11%) in dry matter contents of local breed eggs were higher than those of improved breed from both systems. The findings indicated that modern poultry farming in Ngaoundéré has been poorly developed and backyard eggs were richer in nutrients and consequently highly recommended to use.
The Effect of Artemisia on Immune Response and Productive Performance Against Newcastle Disease in Broiler Chickens
Authors: Kaab Haider Tuma , Hameed Samer Sadeq , Sahib Ali Mahdi
Published: April 2022

Prevention of Newcastle disease has received a lot of interest across the world. The high productivity performance of the commercial chickens’ breeds has negative effects on the immune system and animal welfare. As a result, the current study aimed to investigate the benefits of adding Artemisia powder at levels of 0.5% and 1% to broilers’ feed as a growth and health promoter. A total of 120 commercial broiler chickens were grown on the floor in a chicken house and separated into three groups, including one control and two treatment groups. Each group contained 40 chickens subdivided into two replicates. The three groups, namely G1 (chickens without Artemisia powder, as a control group), G2, and G3 in which chickens were fed with basal diet plus 0.5% and 1% Artemisia powder, respectively, were differentiated based on their diet throughout 35 days of the experiment. The measured parameters included the immune response to Newcastle disease vaccine, blood biochemical parameters, and growth performance as well as relative weight for the spleen and bursa of Fabricius. A diet containing 1% Artemisia powder significantly improved antibody titer against Newcastle disease, body weight, and weight gain. Thus, the addition of 1% of Artemisia powder to the broiler’s diet can improve immune response against Newcastle disease and growth performance.
The Effect of Probiotic Derived from Kumpai Minyak (Hymenachne Amplexicaulis) Silage on Performance and Egg Quality Characteristics of Pegagan Ducks
Authors: Sandi Sofia , Yosi Fitra , Sahara Eli , Ali Asep Indra Munawar , Gofar Nuni , Muhamad Nur
Published: April 2022

The study aimed to determine the effect of probiotics derived from an isolate of silage Kumpai Minyak grass on performance and the physical egg quality of Pegagan ducks. The study was conducted in 16 weeks, from May to September 2020. The sample size was 400 female Pegagan ducks aged five months. The treatments included basal diet (Control) and base diet plus 0.2% (P2), 0.4% (P4), 0.6% (P6), and 0.8% (P8) probiotic silage of Kumpai Minyak grass. The observed variables were performance (egg production, egg weight, feed consumption, and feed conversion ratio) and physical quality (albumen index, albumen weight, yolk weight, and Haugh unit). Observation data on probiotic treatment 0.8% (P8) established a significant effect on egg weight, compared to other treatments. Moreover, P8 probiotic treatment could significantly affect daily egg production and feed conversion ratio, compared to P2 and P4 probiotic treatments. Different results were found in the observations on feed consumption, where the overall treatment diet indicated significant results, compared to the control treatment. Specifically, several variables showed a significant effect, namely albumen index, albumen weight, egg yolk weight, and Haugh unit. Each observed variable value increased along with increasing probiotic treatment levels. However, egg index, egg yolk index, shell weight, and thickness were inversely related to the other variables investigated in this study. The P8 probiotic treatment could increase digestibility and absorption of feed nutrients due to inhibition of pathogenic bacteria and optimization of the digestive tract. The probiotics at the level of 0.8% produced from the Kumpai grass silage process can be used as a growth promoter for laying ducks to replace commercial antibiotic products.
Subchronic Toxicity of Ivermectin and Butaphosphan in Layer Chickens
Authors: Indyuhova Evgenia , Arisov Mikhail , Maximov Vladimir , Azarnova Tatiana
Published: April 2022

The development of new veterinary drugs to treat and prevent poultry parasitic infections, as well as the study of their safety is a hot topic for modern parasitology. The purpose of this research was to study the subchronic toxicity of the ivermectin and butaphosphan-based drugs at a therapeutic and threefold therapeutic dose during a seven-day oral administration to the Hisex White chickens. The provisional name of the drug is Iverbutan. The chickens from the first experimental group were given the drug at a threefold therapeutic dose of 3 mL of the drug per one liter of drinking water. The chickens from the second experimental group were given the drug at a therapeutic dose of 1 mL of Iverbutan per one liter of drinking water. The chickens from the control group received water without the drug. The chickens were weighed, and then the body temperature and blood samples from the axillary vein were measured on days 1, 8, and 17 of the experiment before the morning feeding. On day 8 of the study, the chickens from the first experimental group showed a 7.4% decrease in body weight and increase in body temperature by 0.8%, an increase in alanine aminotransferase activity by 2.1 times, aspartate aminotransferase activity by 1.6 times, and bile acids by 1.4 times. Moreover, there was a 4.6% decrease in glucose concentration, a 3.5% increase in lactate dehydrogenase activity, a 7.3% decrease in triglycerides, as well as a decrease in hemoglobin by 3.2% and erythrocytes by 10.6% in the first experimental group, compared to the control group. On day 17 of the experiment, the above blood parameters in the chickens from the first experimental group did not significantly differ from the control group, indicating the reversibility of the hepatotoxic effect. In this regard, a three-fold therapeutic dose can be considered a threshold. The chickens from the second experimental group showed no changes in their physiological status as compared to the control. Thus, the study results confirm the safety of the drug in the recommended dosage regimen.
The Effect of Kepok Banana (Musa Paradisiaca L.) on Immunoglobulin, Vitamins, and Cholesterol Content of Eggs in Laying Hens
Authors: Leke Jein Rinny , Wantasen Erwin , Siahaan Ratna , Sompie Florencia , Kaunang Charles , Widjastuti Tuti , Natsir Muhammad Halim
Published: April 2022

Eggs contain all the proteins, lipids, vitamins, minerals, and growth factors necessary for the development of the embryo. Egg white and yolk proteins are considered functional food substances since they have biological activities, such as metal-chelating, antimicrobial, anticancer, antioxidant, and immunomodulatory activities. The current study aimed to determine the effect of banana kepok on the production levels of immunoglobulin Y (IgY), vitamins, and cholesterol of eggs in laying hens. A total of 200 laying hens (medium brown 402) were used at 80 weeks of age with 5 treatments and 5 replications and each entailed 8 chickens. The treatment groups included the use of kepok banana flour (KBF) as R0 (no KBF), R1 (95 Basal feed + 5% KBF), R2 (90 basal feed + 10% KBF), R3 (85 basal feed + 15% KBF), and R4 (80 basal feed + 20% KBF). A total of 50 eggs were used in egg yolk sampling. The investigated variables were egg IgY, vitamins (A, B1, B6, D2, D3), and cholesterol content. The results of the study indicated that the administration of kepok bananas at different levels could provide a significant difference in IgY, vitamins (A, B1, D2, D3), and cholesterol of eggs. However, it did not significantly affect Vitamin B6. The study concluded that KBF can positively affect IgY and vitamins in eggs. Moreover, it could decrease the cholesterol in eggs.
Effects of Group Sizing on Behavior, Welfare, and Productivity of Poultry
Authors: Kiani Ali
Published: April 2022

The excessive intensive production of poultry meat and egg caused significant changes in poultry husbandry, behavior, and welfare. Therefore, animal welfare and behavior have become an important issue in poultry production and arises the necessity to reconsider all husbandry practices including group size and density. This review aims to investigate the association of group size with growth performance, detrimental behaviors, and welfare by reviewing current norms and regulations, as well as scientific literature in industrial poultry farms, including chicken, turkey, and quail. It has been found that group size can affect production performance, especially growth rates, feed efficiency, and number of competitors, which can lead to damaging behavior and consequently injuries in poultry. Due to the intensification of the poultry production systems, many natural behaviors of domesticated poultry, including food search strategies, hierarchy formation, and aggressiveness, are changed or modified, compared to their ancestors. Therefore, challenging behaviors in commercialized conditions and large groups of poultry must be investigated. The current recommendations and regulations of the industry for commercial poultry on group size and space requirements differ from scientifically investigated trials. On the other hand, available scientific research about the impact of flock size on poultry welfare, behavior, and production, has been carried out in experimental settings with flock sizes that are varied considerably from those used in the commercial settings. In conclusion, results from studies on optimum group size have indicated some degree of confounding and interactions between enclosure size and density. Furthermore, the social and physical environment can have a significant impact on a variety of welfare-related aspects and behavioral indicators. It is important to note that this evaluation focused on studies conducted in experimental settings, making it difficult to extrapolate the findings to commercial settings where thousands of birds are reared at once.
CONSUMO DE CIANURO DE CONCENTRADO DE PIRITA AURIFERA, EMPLEANDO OZONO COMO PRETRATAMIENTO
Authors: Rodriguez-Rodriguez Carolina de Jesús , Salas-Puente Gabriela , Baltazar-Vera Juan Carlos , Valtierra-Olivares Joel Everardo , Alonso-Gonzalez Omero
Published: April 2022

La pirita (FeS2) es el segundo mineral huésped más común de las especies de oro. Esta asociación presenta una complejidad diversa, ya que el oro puede encontrarse finamente diseminado ó incluido a tamaño muy fino (0.1 a 1.0 µm), por lo que requieren condiciones de trituración extremas y/u oxidación para liberar el oro. En este trabajo se evaluó el consumo de cianuro cuando un concentrado de pirita aurífero es sometido a un pretratamiento con ozono antes de la cianuración. Se realizaron pruebas de cianuración a  1000 y 3000 ppm de CN- para un concentrado de pirita con una ley de 67.44% de FeS2, observándose una reducción en el consumo de cianuro del 54% y 69% para dichas concentraciones de cianuro, cuando el mineral se somete a un pre-tratamiento con ozono. Estos resultados sugieren que el uso del ozono, además de incrementar la recuperación de plata, genera un impacto ambiental significativo.
Attributes of excellent clinician teachers and barriers to recognizing and rewarding clinician teachers’ performances and achievements: a narrative review
Authors: Wondwossen Fantaye Arone , Kitto Simon , Hendry Paul , Wiesenfeld Lorne , Whiting Sharon , Gnyra Catherine , Fournier Karine , Lochnan Heather
Published: April 2022

Background: Over the last 31 years, there have been several institutional efforts to better recognize and reward clinician teachers. However, the perception of inadequate recognition and rewards by clinician teachers for their clinical teaching performance and achievements remains. The objective of this narrative review is two-fold: deepen understanding of the attributes of excellent clinician teachers considered for recognition and reward decisions and identify the barriers clinician teachers face in receiving recognition and rewards.
Methods: We searched OVID Medline, Embase, Education Source and Web of Science to identify relevant papers published between 1990 and 2020. After screening for eligibility, we conducted a content analysis of the findings from 43 relevant papers to identify key trends and issues in the literature.
Results: We found the majority of relevant papers from the US context, a paucity of relevant papers from the Canadian context, and a declining international focus on the attributes of excellent clinician teachers and barriers to the recognition and rewarding of clinician teachers since 2010. ‘Provides feedback’, ‘excellent communication skills’, ‘good supervision’, and ‘organizational skills’ were common cognitive attributes considered for recognition and rewards. ‘Stimulates’, ‘passionate and enthusiastic’, and ‘creates supportive environment’, were common non-cognitive attributes considered for recognition and rewards. The devaluation of teaching, unclear criteria, and unreliable metrics were the main barriers to the recognition and rewarding of clinician teachers.
Conclusions: The findings of our narrative review highlight a need for local empirical research on recognition and reward issues to better inform local, context-specific reforms to policies and practices.
Аналіз інтерфейсів мереж та систем промислового Інтернету речей.
Authors: Tkachuk А. , Svirzhevsky К. , Grisyuk О. , Trokhimchuk І. , Tkachuk V
Published: April 2022

Концепція Інтернету речей (IoT), передбачає активне впровадження вбудованих технологій в сучасні інфокомунікаційні мережі зв'язку. Дана концепція охоплює все більше число областей людської життєдіяльності. В рамках концепції IoT розвивається напрямок - промисловий Інтернет речей (Industrial Internet of Things – IIoT), який охоплює питання створення гетерогенної інтелектуальної системи автоматизації роботи промислових об’єктів та підприємств. Системи IIoT використовуються в різних областях виробництва, таких як інтелектуальне виробництво, сільське господарство, виробництво електронних пристроїв, машинобудування, виробництво верстатів, автоматизація збору та обліку даних тощо. Відповідно до ITU-T Y.4003 «Overview of smart manufacturing in the context of the industrial Internet of things», IIoT – це концепція перетворення промисловості, яка використовує для цього існуючі і нові інформаційні та телекомунікаційні технології і заснована на концепції Інтернету речей. В рамках концепції IIoT проводиться автоматизація роботи промислового обладнання, розрахунки економічних показників, забезпечення безпеки працівників. Основною відмінністю систем цього типу є їх тісний контакт з хмарними технологіями і використання систем здатних самостійно навчатися та створювати нейронні зв’язки для поточної оцінки роботи підприємства та планування його розвитку.
In Times of Restricted Mobility: Cancel, Change Date, Or Change Format of Tourism Conferences
Authors: Falk Martin Thomas , Hagsten Eva
Published: April 2022

The aim of this article is to examine how tourism conference organizers react to the restricted mobility incurred by the spread of the COVID-19 virus. Do they cancel, change format, or change date for the event? This study contributes to an initial analysis of how organizers of international
academic conferences in the tourism and hospitality industry deal with whole groups of participants who are no longer mobile and therefore cannot actively network personally. This uniquely compiled data covers a large representative number of conferences in this field. A Multinomial Logit
model is used to estimate the options available. Data are based on unique information on almost 100 conferences, meetings, and congresses in the tourism and hospitality sector, including related fields such as leisure and recreation, planned to be held during the period of March to November
2020. Descriptive evidence shows that approximately one out of five conferences changes to a virtual format, somewhat more than half moves the date (mainly to the year 2021), and the remaining 25% cancel the event without alternative offers. Estimation results reveal that the decision to change
to an online format increases nonlinearly over time in the form of an inverse U-shaped curve. This indicates a certain resistance to virtual conferences, although with more time for planning, a gradual adaptation to the actual situation appears to be possible. Longer conferences are less likely
to change format. The probability of cancellations is lower for association conferences, which are held regularly.
Robots and Events: Participant Preferences for Robot Services
Authors: Webster Craig , Ivanov Stanislav
Published: April 2022

Robots are rapidly taking over tasks in the workplace. However, there has been little or no research on the specifics of how the public views the use of robotic technologies in events. In this research note, we use data from a large-scale international survey to learn about how the
general public views the use of robots in events and what attitudes and demographics are associated with acceptance of greater use of robots as labor in events. The findings show that the public is most supportive of using robots to supply information at events and least supportive of using
robots as entertainers at events. However, regressions illustrate a general willingness to have robots do tasks for events and a generally positive attitude towards robots. These attitudes are best correlated with the acceptance of higher ratios of robots in the labor force at events.
A Post-Covid Strategy for Event Planners
Authors: McMahon Dave , Spencer Joe , Witzig Lisa
Published: April 2022

The authors propose a strategy to help event planners pivot and adjust to the post-COVID world. This involves the use of social media and sales force automation (SFA). The authors explain how both of these can be accomplished in a low cost, easy to learn and use manner by adopting LinkedIn. The authors also present three tools that will help the event planner assess if they and their personnel are ready to make such a change. The authors conclude with a set of managerial imperatives that include not only how to be proactive and competitive but also the operational adjustments that will be necessary for the mode of operation, the reach of the planner, how online presence and content will drive awareness, the role and definition of personnel, how client relationships are conducted, and how the different facets of the event itself will change.
How Can We Reduce Conference Venues'' Use of Single-use Plastics?
Authors: Whitfield Julie , Svobodova Petra , Webber Don J.
Published: April 2022

Society-level discourse on single-use plastics (SUPs) increases awareness of their negative environmental impacts and reduces their usage by environmentally aware individuals, firms, and governments. This article makes a unique and timely contribution to the literature by exploring
why conference venues have not been proactive in reducing their usage of SUPs. Application of a questionnaire approach to collect primary data about venues' attitudes and practices towards their level and reduction in usage of SUPs reveals that although venues claim to be motivated to reduce
delegates' use of SUPs, they state that excessive costs inhibit their ability to do so, and that legal and government regulations have the strongest influence on their use of SUPs. Our findings provide a frame of reference and an order of policy priority to ensure SUPs reduction by venues.
Event Revisit Intention in the Context of Covid-19 Risks
Authors: Boo Soyoung , Kim Tony Jooho
Published: April 2022

With the adverse effects of the COVID-19 pandemic widely visible in the event industry, event organizers face challenges regarding customer retention in the form of return visits. Because event revisit intention is crucial to predicting event attendees' behavior, this study attempts to examine the likelihood of return for customers who have prior event (state fair) experience. Drawing from previous studies on event-related hazards and safety risks, our proposed framework suggests that a certain type of trust (i.e., social trust and confidence) reduces perceived risk, leading to increased event revisit intention in a time of pandemic. To test hypothesized relationships among trust, perceived risk, and event revisit intention, consumer information was gathered through Amazon's Mechanical Turk crowdsourcing platform. Key findings that emerge include the fact that trust in events is a strong predictor of event revisit intention, while perceived risk mediates the relationship between trust and revisit intention, albeit weakly. These results offer event organizers insights into how to enhance revisit intention in the face of health risks and ongoing uncertainty.
Potential Health Impacts of Gamma-Frequency Sound in Server Room
Authors: Alnuaimy Ahmed N. H. , Hashem Rasha , Johnson Michael
Published: April 2022

Hearing degradation caused by an exposure to excessive noise is irreversible. Many of the other relative hazards that can be developed from noise-induced hearing loss are impaired communication with family and coworkers, social isolation, irritability, decreasing of self-esteem, anxiety, and loss of productivity. Hearing impairment is a significant health hazard that is naturally occurs with aging. Tinnitus is a disorder in hearing ability and can cause a ringing in the ear without a source for physical sound. More than 40 million people in the United States are suffering from tinnitus disorder. Fourteen percent of adults are suffering from chronic tinnitus, and 50% of normal adults with no clinically confirmed disorders in hearing ability experience subtle tinnitus in a silent environment. An exposure to excessive noise and the process of natural aging of people may increase the occurrence of Tinnitus. Tinnitus is a spontaneous auditory perception that is associated with the continued activity of the gamma frequency band (30 Hz - 80Hz). Server Room can be considered as a continuous source of gamma frequency. Server room running devices are generating a continuous noise that most of its power is allocated in the band of gamma frequency.
Simulation of the influence of N2O on the Chemical Stage of Water Radiolysis
Authors: Barilla Jiří , Simr Pavel , Sýkorová Květuše
Published: April 2022

The absorption of ionizing radiation causes the radiolysis of water to form aggressive radicals. Water radiolysis plays an essential role in radiotherapy, radio sterilization, food irradiation, and wastewater irradiation because living cells consist mainly of water. Radical clusters arise immediately after irradiating water with ionizing radiation, and aggressive radicals damage living cells. These damages are caused mainly by SSB and DSB formation on DNA molecules. The mathematical simulation model, created with the help of Continuous Petri nets, is very suitable to study the dynamics of the chemical stage of water radiolysis. This mathematical simulation model, which includes the influence of oxygen on the chemical stage of radiobiological mechanism, was created in our previous work. This paper is extended to include the influence of N2O. The presence of N2O during irradiation of water plays a vital role because it increases OH radicals, which are mainly responsible for DNA damage. The mathematical model enables us to simulate the dynamics of the chemical reactions and the diffusion of radical clusters during chemical stage of water radiolysis.
Assessment of acupuncture for treating herpes zoster:a protocol for an umbrella systematic review and meta analysis
Authors:   Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China, LI jianhong , LI Zhuang , SHE Yalin , LIN Guohua
Published: April 2022

Review question / Objective: Patients who suffer from HZ in line with the consensus of Chinese experts will be included, regardless of sex, race and time of onset . Those who diagnosed with PHN, auto-immune diseases, pregnant women will be excluded.Acupuncture, electroacupuncture, fire needle, skin acupuncture, plum blossom needle, auriculo-acupuncture all these such therapies in treating herpes zoster will be included.The control group’s treatment includes drug therapy (such as antiviral acyclovir nutritional nerve medicine or traditional Chinese medicine, etc.) ，sham acupuncture, placebo, no treatment, and so on except acupuncture therapy. efficacy rate (with reference to the guiding principles of Clinical Research of New drugs in China (trial)).pain evaluation (pain relief time, pain intensity, visual analogue score, VAS), incidence of residual neuralgia PHN.
Prognostic value of ASXL1 mutations in patients with myelodysplastic syndromes and acute myeloid leukemia: A meta-analysis
Authors:   Department of Hematology, Xiangya Hospital Central South University, Jiang Zhiping , Zhang Ao , Wang Shuxing , Ren Quanlei , Wang Yizhu
Published: April 2022

Review question / Objective: A meta-analysis was performed to investigate prognostic value of ASXL1 mutations in patients with myelodysplastic syndromes and acute myeloid leukemia. Condition being studied: Some MDS or AML patients have ASXL1 mutations while others haven’t. Main outcome(s): We used OS as the primary endpoint and AML transformation as the secondary endpoint. OS was defined as either death (failure) or survival at the last follow-up. AML transformation was defined as starting when the patient entered the trial and proceeding to the time of AML diagnosis.Combined HRs and 95% CIs for OS and AML transformation were used to evaluate the prognostic effect of ASXL1 mutations using the generic inverse variance method.
The Simultaneous Localization and Mapping (SLAM)-An Overview
Authors: Alsadik Bashar , Karam Samer
Published: April 2022

Positioning is needed for many applications related to mapping and navigation, either in civilian or military domains. The significant developments in satellite-based techniques, sensors, telecommunications, computer hardware and software, image processing, etc. positively influenced solving the positioning problem efficiently and instantaneously. Accordingly, the mentioned development empowered the applications and advancement of autonomous navigation. One of the most interestingly developed positioning techniques is what is called in robotics Simultaneous Localization and Mapping (SLAM). The SLAM problem solution has witnessed a quick improvement in the last decades, either using active sensors like the RAdio Detection and Ranging (Radar) and Light Detection and Ranging (LiDAR) or passive sensors like cameras. Definitely, positioning and mapping is one of the main tasks for geomatics engineers, and therefore it's of high importance for them to understand the SLAM topic, which is not easy because of the huge documentation and algorithms available and the various SLAM solutions in terms of the mathematical models, complexity, the sensors used, and the type of applications. In this paper, a clear and simplified explanation of SLAM from a geometrical viewpoint is introduced, avoiding going into the complicated algorithmic details behind the presented techniques. In this way, a general overview of SLAM is presented, showing the relationship between its different components and stages, like the core part of the front-end and back-end, and their relation to the SLAM paradigm. Furthermore, we explain the major mathematical techniques of filtering and pose graph optimization, either using visual or LiDAR SLAM, and introduce a summary of the efficient contribution of deep learning to the SLAM problem. Finally, we address examples of some existing practical applications of SLAM in our reality.