Introduction: One of the most frequent observations in long-term blood donation is chronic iron deficiency, which can develop into anaemia. The majority of blood screening methods employed by blood banks do not incorp...Introduction: One of the most frequent observations in long-term blood donation is chronic iron deficiency, which can develop into anaemia. The majority of blood screening methods employed by blood banks do not incorporate iron-status markers, which may result in potential subclinical iron deficiency. The aim of this study was to evaluate the effects of repeated blood donation on the levels of iron in the body and to guide blood donors in preventing the depletion of iron stores. Methods: Regular blood donors were categorised into distinct groups according to the number of donations they gave, and then the correlation between these groups and their bodies’ iron levels was examined. Different parameters were employed to identify iron deficiency and iron depletion in blood donors: serum ferritin, mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH), mean corpuscular haemoglobin concentration (MCHC), total iron-binding capacity (TIBC), and serum iron. Results: The study included 300 individuals who regularly and willingly donated blood. There were no iron insufficiency cases among those donating blood for the first time (Group I). However, 15.5% of individuals who had donated once before (Group II) had ferritin levels of 15 - 30 μg/dl (ng/ml), indicating reduced iron stores. The rate increased to 18% (37 out of 206 individuals) among regular blood donors (Groups III, IV, and V). Iron deficiency (depletion) prevalence among regular blood donors in Groups III, IV, and V was 5.9% (12 out of 206) and 50.4% (100 out of 206). Donors who had donated blood most frequently had the lowest levels of haematological markers MCH, MCHC, and TIBC. Provide the p-values representing the differences between the means of MCV, MCH, iron, TIBC, and ferritin levels when comparing donor groups with the control group (Group I) based on the frequency of donations. Indicate statistically significant differences where the p-value is less than 0.0125. This significance level is adjusted based on the Bonferroni method, considering展开更多
Background: Inflammatory gingival enlargement is a more common clinical feature with orthodontic therapy than other features. Therefore, this study was designed to the evaluation of the influence of fixed orthodontic ...Background: Inflammatory gingival enlargement is a more common clinical feature with orthodontic therapy than other features. Therefore, this study was designed to the evaluation of the influence of fixed orthodontic treatment duration on the severity of inflammatory gingival enlargement (fixed orthodontic induced gingival enlargements) and some properties of saliva. Material and Methods: The sample size comprised 145 patients undergoing fixed orthodontic treatment for at least 6 months aged 13 - 32 years. They were divided according to orthodontic treatment duration into three groups. Group I (n = 47) included the patients who were treated for less than 6 months, group II (n = 51) included the patients who were treated for a period of 6 - 12 months, and group III (n = 47) included the patients who were managed for more than 12 months. Data were obtained from the outpatient clinics, college of dentistry, King Khalid University, Abha, Saudi Arabia, and some dental centers in Sana’a city, the Republic of Yemen. This study was conducted from October 2021 G to January 2022 G. Clinical examination was done for plaque index (PLI), gingival index (GI), and gingival enlargement indexes (GEI). Saliva was collected in sterile test tubes then salivary flow and pH were measured. Statistical analysis was done with SPSS (version 23) and ANOVA test to evaluate the impact of orthodontic treatment duration on the severity of inflammatory gingival enlargement and some properties of saliva. Results: The statistical analysis demonstrated the highest mean plaque index (PLI) was among groups III and I participants whereas, the highest mean gingival index and mean gingival enlargement were among groups II and III participants. The present study revealed an increase in salivary flow with decreased salivary pH values with an increase in orthodontic therapy duration. There were statistically significant differences in clinical findings and salivary flow and pH values were observed in the comparison between groups I, II and III except PL展开更多
<strong>Background: </strong>Type-2 diabetic patients (uncontrolled levels of glucose blood) usually have periodontal diseases and alveolar bone loss. <strong>Objectives: </strong>The present s...<strong>Background: </strong>Type-2 diabetic patients (uncontrolled levels of glucose blood) usually have periodontal diseases and alveolar bone loss. <strong>Objectives: </strong>The present study was designed to clarify the impact of severity of periodontal bone loss and the levels of glycated hemoglobin (HbA1c) on the periodontal clinical parameters of the 2017 World Workshop among type 2 diabetic patients in Saudi Arabia (Saudi and non-Saudi). <strong>Material and Methods: </strong>This study was done on 298 type 2 diabetic patients, selected from the internship clinics, College of Dentistry, King Khalid University, Abha, Saudi Arabia. The selection of patients was dependent on the levels of glycated hemoglobin (HbA1c), and they were categorized into controlled (<7% HbA1c) and uncontrolled type 2 diabetics (>7% HbA1c). All patients were divided according to the severity of periodontal bone loss into three groups, group I: mild periodontal bone loss, group II: moderate periodontal bone loss, and group III: severe periodontal bone loss. Clinical evaluation of periodontal diseases was carried out by clinical parameters according to the 2017 World Workshop. All data were collected and analyzed. A p-value of <0.05 was considered significant, and of <0.001 was considered highly significant. <strong>Results:</strong> The severity of periodontal bone loss were determined in controlled type 2 diabetics (<7% HbA1c) and compared to uncontrolled type 2 diabetics (>7% HbA1c). An increased percentage of patients with severe periodontal bone loss was observed in uncontrolled type 2 diabetics (>7% HbA1c) (42.9%), as compared to controlled type 2 diabetics (<7% HbA1c) (30.5%) without statistically significant (p = 0.251). An increased mean of age, clinical attachment loss (CAL), and percentage of radiographic bone loss (% RBL) were detected in controlled type 2 diabetics (<7% HbA1c), as compared to uncontrolled type 2 diabetics (>7% HbA1c). In contrast, we found an increased mean of plaque control record (PCR), gingival bleed展开更多
为了从微观角度探究泡沫碳化硅填料内部孔道的流动特性,采用高速摄影和示踪粒子法相结合的可视化方法,在微观尺度下观测液体在泡沫碳化硅波纹规整填料内部的流动特性。通过对获得图像数据的分析发现,当流量为20~120 m L/min时,部分流经...为了从微观角度探究泡沫碳化硅填料内部孔道的流动特性,采用高速摄影和示踪粒子法相结合的可视化方法,在微观尺度下观测液体在泡沫碳化硅波纹规整填料内部的流动特性。通过对获得图像数据的分析发现,当流量为20~120 m L/min时,部分流经液体在泡沫碳化硅填料孔道内形成稳定的涡旋流。在此基础上,进一步考察了液体流量对泡沫碳化硅波纹填料片孔内涡旋流动的尺度和强度影响,结果表明,在低流量条件下,随着流体流量从20 m L/min增加到120 m L/min,孔内涡旋的半径减小、稳定性增强且旋流速度增加。展开更多
This study was carried out to investigate the effect of different nitrite concentrations on the sensory parameters of roast beef including color, flavor, juiciness, texture and overall acceptability. Four roast beef b...This study was carried out to investigate the effect of different nitrite concentrations on the sensory parameters of roast beef including color, flavor, juiciness, texture and overall acceptability. Four roast beef batches were formulated;the first three treatments were with nitrite concentrations of 0.006%, 0.012% and 0.018% and stored at abused chilling temperature (12°C), while the fourth one was a control treatment with 0.026% nitrite and storage at 4°C. Results showed that increasing nitrite concentration from 0.006% to 0.026% enhanced the shelf life of roast beef stored for 7 days without affecting the sensory characteristics whether at 12°C or 4°C since there were no significant differences (P > 0.05) between all treatments regarding color, flavor, juiciness, texture and overall acceptability. These results could direct us to use high nitrite concentration to protect this product and elongate its shelf life without affecting its preference parameters.展开更多
Introduction: The impact of pregnancy on the prognosis of papillary thyroid carcinoma (PTC) has been debated for several decades;however, no definitive conclusions have been reached. The main objective of this study i...Introduction: The impact of pregnancy on the prognosis of papillary thyroid carcinoma (PTC) has been debated for several decades;however, no definitive conclusions have been reached. The main objective of this study is to demonstrate the short-term influence of pregnancy on the evolution and prognosis of PTC. Materials and Methods: A prospective descriptive and analytical study was conducted in the Endocrinology and Diabetology Department at the Hassan II University Hospital in Fez, including patients followed for papillary thyroid carcinoma presenting with a pregnancy during the year 2019 and 2020. The follow-up of these patients was continued until 1 year postpartum. We studied the clinical, paraclinical and therapeutic factors that could influence the prognosis of the disease. Results: We included 26 patients. Our study showed a significant correlation between recurrence and the presence of unfavorable histological signs (p = 0.02) as well as the initial Tg level (0.01). However, pregnancy was not an influencing factor (p = 0.41). Conclusion: Pregnancy does not seem to be a factor aggravating the prognosis of differentiated thyroid cancers.展开更多
文摘Introduction: One of the most frequent observations in long-term blood donation is chronic iron deficiency, which can develop into anaemia. The majority of blood screening methods employed by blood banks do not incorporate iron-status markers, which may result in potential subclinical iron deficiency. The aim of this study was to evaluate the effects of repeated blood donation on the levels of iron in the body and to guide blood donors in preventing the depletion of iron stores. Methods: Regular blood donors were categorised into distinct groups according to the number of donations they gave, and then the correlation between these groups and their bodies’ iron levels was examined. Different parameters were employed to identify iron deficiency and iron depletion in blood donors: serum ferritin, mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH), mean corpuscular haemoglobin concentration (MCHC), total iron-binding capacity (TIBC), and serum iron. Results: The study included 300 individuals who regularly and willingly donated blood. There were no iron insufficiency cases among those donating blood for the first time (Group I). However, 15.5% of individuals who had donated once before (Group II) had ferritin levels of 15 - 30 μg/dl (ng/ml), indicating reduced iron stores. The rate increased to 18% (37 out of 206 individuals) among regular blood donors (Groups III, IV, and V). Iron deficiency (depletion) prevalence among regular blood donors in Groups III, IV, and V was 5.9% (12 out of 206) and 50.4% (100 out of 206). Donors who had donated blood most frequently had the lowest levels of haematological markers MCH, MCHC, and TIBC. Provide the p-values representing the differences between the means of MCV, MCH, iron, TIBC, and ferritin levels when comparing donor groups with the control group (Group I) based on the frequency of donations. Indicate statistically significant differences where the p-value is less than 0.0125. This significance level is adjusted based on the Bonferroni method, considering
文摘Background: Inflammatory gingival enlargement is a more common clinical feature with orthodontic therapy than other features. Therefore, this study was designed to the evaluation of the influence of fixed orthodontic treatment duration on the severity of inflammatory gingival enlargement (fixed orthodontic induced gingival enlargements) and some properties of saliva. Material and Methods: The sample size comprised 145 patients undergoing fixed orthodontic treatment for at least 6 months aged 13 - 32 years. They were divided according to orthodontic treatment duration into three groups. Group I (n = 47) included the patients who were treated for less than 6 months, group II (n = 51) included the patients who were treated for a period of 6 - 12 months, and group III (n = 47) included the patients who were managed for more than 12 months. Data were obtained from the outpatient clinics, college of dentistry, King Khalid University, Abha, Saudi Arabia, and some dental centers in Sana’a city, the Republic of Yemen. This study was conducted from October 2021 G to January 2022 G. Clinical examination was done for plaque index (PLI), gingival index (GI), and gingival enlargement indexes (GEI). Saliva was collected in sterile test tubes then salivary flow and pH were measured. Statistical analysis was done with SPSS (version 23) and ANOVA test to evaluate the impact of orthodontic treatment duration on the severity of inflammatory gingival enlargement and some properties of saliva. Results: The statistical analysis demonstrated the highest mean plaque index (PLI) was among groups III and I participants whereas, the highest mean gingival index and mean gingival enlargement were among groups II and III participants. The present study revealed an increase in salivary flow with decreased salivary pH values with an increase in orthodontic therapy duration. There were statistically significant differences in clinical findings and salivary flow and pH values were observed in the comparison between groups I, II and III except PL
文摘<strong>Background: </strong>Type-2 diabetic patients (uncontrolled levels of glucose blood) usually have periodontal diseases and alveolar bone loss. <strong>Objectives: </strong>The present study was designed to clarify the impact of severity of periodontal bone loss and the levels of glycated hemoglobin (HbA1c) on the periodontal clinical parameters of the 2017 World Workshop among type 2 diabetic patients in Saudi Arabia (Saudi and non-Saudi). <strong>Material and Methods: </strong>This study was done on 298 type 2 diabetic patients, selected from the internship clinics, College of Dentistry, King Khalid University, Abha, Saudi Arabia. The selection of patients was dependent on the levels of glycated hemoglobin (HbA1c), and they were categorized into controlled (<7% HbA1c) and uncontrolled type 2 diabetics (>7% HbA1c). All patients were divided according to the severity of periodontal bone loss into three groups, group I: mild periodontal bone loss, group II: moderate periodontal bone loss, and group III: severe periodontal bone loss. Clinical evaluation of periodontal diseases was carried out by clinical parameters according to the 2017 World Workshop. All data were collected and analyzed. A p-value of <0.05 was considered significant, and of <0.001 was considered highly significant. <strong>Results:</strong> The severity of periodontal bone loss were determined in controlled type 2 diabetics (<7% HbA1c) and compared to uncontrolled type 2 diabetics (>7% HbA1c). An increased percentage of patients with severe periodontal bone loss was observed in uncontrolled type 2 diabetics (>7% HbA1c) (42.9%), as compared to controlled type 2 diabetics (<7% HbA1c) (30.5%) without statistically significant (p = 0.251). An increased mean of age, clinical attachment loss (CAL), and percentage of radiographic bone loss (% RBL) were detected in controlled type 2 diabetics (<7% HbA1c), as compared to uncontrolled type 2 diabetics (>7% HbA1c). In contrast, we found an increased mean of plaque control record (PCR), gingival bleed
文摘为了从微观角度探究泡沫碳化硅填料内部孔道的流动特性,采用高速摄影和示踪粒子法相结合的可视化方法,在微观尺度下观测液体在泡沫碳化硅波纹规整填料内部的流动特性。通过对获得图像数据的分析发现,当流量为20~120 m L/min时,部分流经液体在泡沫碳化硅填料孔道内形成稳定的涡旋流。在此基础上,进一步考察了液体流量对泡沫碳化硅波纹填料片孔内涡旋流动的尺度和强度影响,结果表明,在低流量条件下,随着流体流量从20 m L/min增加到120 m L/min,孔内涡旋的半径减小、稳定性增强且旋流速度增加。
文摘This study was carried out to investigate the effect of different nitrite concentrations on the sensory parameters of roast beef including color, flavor, juiciness, texture and overall acceptability. Four roast beef batches were formulated;the first three treatments were with nitrite concentrations of 0.006%, 0.012% and 0.018% and stored at abused chilling temperature (12°C), while the fourth one was a control treatment with 0.026% nitrite and storage at 4°C. Results showed that increasing nitrite concentration from 0.006% to 0.026% enhanced the shelf life of roast beef stored for 7 days without affecting the sensory characteristics whether at 12°C or 4°C since there were no significant differences (P > 0.05) between all treatments regarding color, flavor, juiciness, texture and overall acceptability. These results could direct us to use high nitrite concentration to protect this product and elongate its shelf life without affecting its preference parameters.
文摘Introduction: The impact of pregnancy on the prognosis of papillary thyroid carcinoma (PTC) has been debated for several decades;however, no definitive conclusions have been reached. The main objective of this study is to demonstrate the short-term influence of pregnancy on the evolution and prognosis of PTC. Materials and Methods: A prospective descriptive and analytical study was conducted in the Endocrinology and Diabetology Department at the Hassan II University Hospital in Fez, including patients followed for papillary thyroid carcinoma presenting with a pregnancy during the year 2019 and 2020. The follow-up of these patients was continued until 1 year postpartum. We studied the clinical, paraclinical and therapeutic factors that could influence the prognosis of the disease. Results: We included 26 patients. Our study showed a significant correlation between recurrence and the presence of unfavorable histological signs (p = 0.02) as well as the initial Tg level (0.01). However, pregnancy was not an influencing factor (p = 0.41). Conclusion: Pregnancy does not seem to be a factor aggravating the prognosis of differentiated thyroid cancers.
