The simulation of the microwave shielding properties of the dual band pass frequency selective surface

Without proper caution, the microwave leakage from a microwave oven door can be harmful to users’ health. In practice, the leaked radiation has to be blocked while the visible light is allowed to pass for a visual inspection of the cooking progress inside the oven. To fulfil the requirements, the door design based on the principle of the frequency selective surface (FSS) was proposed and the gridded square loop pattern was chosen. In the simulation conducted by COMSOL Multiphysics software, the size of the proposed FSS was given as 40.7×40.7 mm with a dielectric thickness of 2.8 mm. Two important characteristics in terms of shielding effectiveness (SE) and optical transparency (OT) of the proposed FSS configuration at normal incidence were simulated and found to be 62.7 dB and 57.5%, respectively. The simulation results indicate that the proposed FSS is applicable to a safety design of a microwave oven door in suppressing the microwave leakage. Parametric studies on the characteristics due to geometrical dimensions and glass substrate thickness were also investigated. These parameters were found to affect the shielding and transmitting performances of the proposed FSS.

ANALYSIS AND CORRELATION OF FINGER PRINTS WITH BLOOD GROUPS AMONG PEOPLE OF VISAKHAPATNAM DISTRICT, ANDHRAPRADESH-INDIA

INTRODUCTION: Crime scene has a specic identity, so are the criminals. Forensic medicine smells the criminal from scene of crime. It shows the role-play of criminals in the event of crime through detecting certain evidences. Finger prints are genetically inherited and are immutable from birth to death, hence considered as the best tools of identication. Literature states that there is a correlation between the physical characters and blood groups. Identication of nger prints along with the blood groups which are most common evidences in the crime areas, would drive the forensic scientist towards more reliable, accurate and denitive investigation. AIM OF THE STUDY: A. To Determine The Incidence Of Different Patterns Of Finger Prints Among Abo Blood Groups. B. To Ascertain The Correlation Between Finger Prints And Blood Groups. MATERIALS AND METHOD: The present study was carried out among 200 people aged 20-25 years in Visakhapatnam district, Andhra Pradesh using simple random sampling technique. Blood groups of all the subjects were determined in the pathology lab of the college. The nger prints were analyzed by two authors with the help of powerful hand magnifying lens. The observations were categorized accordingly and correlated with the blood groups. RESULTS & CONCLUSION: The study disclosed higher incidence of distribution with loop pattern followed by whorl pattern in O blood group subjects. Comparing the nger prints with blood groups there was no signicant correlation though the entities had their own signicance when analyzed individually.

Assessing relationship between lip prints, finger prints and different blood groups within the population of Karachi

Aim: To determine the correlation between lip print, fingerprint form and blood groups that can be used for the identification of an individual among gender. Method: This cross-sectional study was conducted among 719 female and male participants with ages between 17-34 years from Bahria University Medical and Dental College. Patterns for lip and finger prints were collected along with the blood groups. SPSS v23 was used for statistical analysis. Frequency and percentages of the qualitative variables was calculated. The association of the variables was analyzed using Chi-square. Results: A total of 719 subjects, there were 327 males (45.5%) and 392 females (54.5%). Type I lip pattern was prevalent in 31.8% males followed by Type I’ in 27.6% females. The loop type of the finger print was observed in 165(50.5%) of males and 162(41.3%) females. The most common type of blood group was A+ in 27.2% in males while in females it was O+ in 29.8%. Conclusion: Individual parameters such as lip and finger prints along with blood groups can play an important role in personal identification of individual. In our study A+ blood group along with arch pattern of finger prints and Type I lip were most common patterns in males while in females Type I’lip pattern along with blood group 0+ and Loop pattern were common Keywords: Lip prints, Finger Prints, Cheiloscopy, Blood Groups, Forensic

Sex determination based on footprint ratio and comparison of toe print pattern in the male and female Nigerian students (A case study of Bowen University students)

Dermatoglyphics can be described as the study of the patterns of ridges on the skin of the fingers, palms, toes, and soles. These patterns are of interest in anthropology, criminology, and medicine. The skin on the ventral sides of the hands and the plantar sides of the feet is exclusively designed and is corrugated with the ridges and configurations which are functionally useful. Subjects for the study consisted of 100 persons, 50 males and 50 females, all from Bowen University, Iwo, Osun state of Nigeria and they were all students. The age range was 15-24 years of age. The feature being studied includes the print pattern on their 10 digits and some other parameters to distinguish the sole print patterns of both sexes. The toe print pattern was collected by the use of hand lens, used in viewing the prints on the white paper. For measuring the dimensions of foot prints, the following points were noted; The maximum length: the distance between the greatest toe and the mid-rear heal point called the pterion. The maximum width: the distance between the medial and lateral metatarsal It was observed that in the male and female population 92% of the population was found to possess loop patterns on their toes, 4.2% possessed whorl patterns while 3.8% possessed arch patterns. Out of the 50 males, 90% has loop pattern, 3.6 % has whorl pattern, 6.4% possessed arch pattern in their right foot. 92.4% has loop patterns, 3.2 % has whorl patterns and 4.4% has arch pattern in their left foot. In total 91.2% of the population possessed loop pattern, 3.4 % possessed whorl pattern while 5.4 % has arch pattern. Considering that of the female population, out of the 50 subjects, 93.2% possesses loop, 4.4% has whorl pattern and 2.4% has arch pattern in their right foot while in the left foot, 92.4% has loop, 5.6% has whorl and 2% has arch patterns in their left foot. In total the female population has 92.8 % loop, 5% whorl and just 2.2 % arch patterns. This results has shown that the female has more whorl pattern (5%) compared to the female value of 3.4% of whorl pattern. Also male has higher percentage of arch pattern (5.4%) compared to the 2.2% value obtained in females. Sex determination by footprint ratio was carried out and the standard footprint ratio values of 0.371219 and 0.3737645 were obtained. 51% accuracy was obtained in sex determination using this method. All foot print ratio up to these values and below was predicted female while foot print ratio above these values were predicted male.

Sexual dimorphism in digital dermatoglyphics: A qualitative analysis of bengali hindu population, West Bengal, India

Dermatoglyphic characteristics for identification of sex play an important role in forensic and medico-legal purposes. Hence, it considered to be the most precise and reliable indicators for personal and gender identification. Such types of information on Bengali speaking Hindu population are very scanty. This was tempted the present authors to assess the sex-wise variation of digital dermatoglyphic traits in a sample from West Bengal, India. A total 168 participants were recruited to obtain basic information and fingertip impression of the participants. Impressions were taken by using Ink method (Calcutta Ink) and examined with hand-lens. The mean age for male participants was 31.30 ±16.13 and for females it was 32.11±13.30. The loop pattern is observed more frequent (46.13%) compared to whorl (36.25%), arch (10.89%) and composite (6.72%). Females have a more loop (47.84%) and arch (12.26%) patterns than males (43.48% and 8.79% respectively. The whorl (39.85%) and composite (7.88%) patterns are observed more frequently in males as compared to females (33.92% and 5.98% respectively). Furuhata’s Index is more frequent in males (91.64) than females (70.9) but both the Dankmeijer’s and Poll’s Index are higher in females (36.13 and 25.61 respectively) than males (22.05 and 20.21 respectively). However, in case of Pattern Intensity Index there is slightly a sex difference for males and females (12.32 and 11.57 respectively). It was concluded that differences in the finger print pattern, combinations and indices can be used as an important tool for the determination of sex in medico-legal and forensic purposes.

ANALISIS POLA PERJALANAN DAN AKTIVITAS WISATAWAN INDONESIA MILENIAL KE SINGAPURA

Millennial recently became a trend in tourism. Millennials were born in 1980 to 2004, they grew up as digital natives, and have a consumptive nature where they do not hesitate to spend a certain amount of money to please themselves such as traveling, both at home and abroad. One of the countries that is a favorite destination for millennial Indonesian tourists when traveling abroad is Singapore. In addition to its close location, Singapore also has modern urban tourism attractions and technologies that match the millennial character. These facts became the background of this research; characteristics, travel patterns, and activities of millennial Indonesian tourists while traveling in Singapore. This research uses descriptive qualitative data analysis. The sample was determined purposively, totaling 105 millennial tourists from Indonesia who had traveled to Singapore. The data collection technique was done by using an online questionnaire. The results showed that the characteristics of millennial Indonesian tourists in Singapore were female, aged 21 to 25 years, unmarried, had a Bachelor's degree and were a private employee. Most tourists are first time traveling to Singapore, stay in Singapore 3 to 7 days, come and travel with family, arranging their own trips, using the internet as a source of information and mostly using MRT (Mass Rapid Transit) as a mode of transportation while traveling in Singapore. There are two millennial Indonesian tourists’ travel patterns while traveling in Singapore, which are chaining loop pattern, and base site pattern. The most common millennial Indonesian tourists’ activities in Singapore is doing culinary tourism (75%), the second is shopping (66%), and the third is enjoying local cultures (51%).

Peripheral arterial filling time and peripheral retina fluorescence features in ultra-widefield angiography

AIM: To evaluate the peripheral arterial filling time (PAFT) and venous filling time (VFT) in eyes without known diseases that may influence filling process using ultra-widefield (UWF) fluorescein angiography (FA), and to review the peripheral retina fluorescence features. METHODS: A total of 30 eyes of 30 patients were retrospectively reviewed in this observational study. UWF-FA was performed using Optos 200Tx. PAFT and VFT was recorded. The interval between the arterial or venous filling completion and the previous photo was documented. The appearance of the far peripheral retina was described as either granular background fluorescence or mottled fluorescent band or vascular leakage. Terminal vascular patterns was described as loop pattern or branching pattern. Microvascular abnormalities such as arteriovenous shunting, vessels crossing the horizontal raphe, right angle vessels, terminal networks, capillary nonperfusion, drusen or microaneurysms were evaluated. RESULTS: The normal limits of PAFT was 3.397-8.984s and 4.399-11.753s for VFT. The appearance of the far peripheral retina, defined as granular background (63%), mottled fluorescence (20%), or vascular leakage (17%), was symmetrical between both eyes. Capillary nonperfusion (23%) and microaneurysms (40%) were more frequently found in eyes with loop pattern than in eyes with branching pattern. Other peripheral signs such as right-angle vessels (73%), and terminal networks (80%) were commonly seen on UWF-FA in the normal peripheral retina. CONCLUSION: The main courses of retinal artery and vein filling time are overlapping with each other on UWF-FA. Notably, the arterial filling process is completed in the arteriovenous phase rather than the traditionally named arterial phase. There are various manifestations in the peripheral retina of normal eyes.

Outcomes and Loop Pattern Analysis of a Road-Map Technique for ERCP with Side-Viewing Duodenoscope in Patients with Billroth II Gastrectomy (with Video)

Endoscopic retrograde cholangiopancreatography (ERCP) in patients who have undergone a Billroth II gastrectomy is a major challenge. This study aimed to evaluate the outcomes of the road-map technique for duodenal intubation using a side-viewing duodenoscope for ERCP in Billroth II gastrectomy patients with naïve papilla, and to analyze the formation and release patterns of common bowel loops that occur when the duodenoscope navigates the afferent limb. The duodenoscopy approach success rate was 85.8% (97/113). In successful duodenoscopy approach patients, there were five bowel looping patterns that occurred when the preceding catheter-connected duodenoscope was advanced into the duodenum: (1) reverse ɣ-loop (29.9%), (2) fixed reverse ɣ-loop (5.2%), (3) simple U-loop (22.7%), (4) N-loop (28.9%), and (5) reverse alpha loop (13.4%). The duodenoscopy cannulation and duodenoscopy therapeutic success rates were 81.4% (92/113) and 80.5% (91/113), respectively, while the overall cannulation and therapeutic success rates were 92.0% (104/113) and 87.6% (99/113), respectively. Bowel perforation occurred in three patients (2.7%). The road-map technique may benefit duodenoscope-based ERCP in Billroth II gastrectomy patients by minimizing the tangential axis alignment between the duodenoscopic tip and driving of the afferent limb, and by predicting and counteracting bowel loops that occur when the duodenoscope navigates the afferent limb.

A New Geometric Model of Laid-in Weft-Knitted Fabrics

Inlay yarn and laid-in structures are important technical knitting elements that have been increasingly applied in the structural design of functional textiles in industrial, medical, and wearable electronics fields. However, there is no currently established geometric model to numerically analyze their spatial morphologies and structural properties. This study presents a new geometric model and numerical analysis approach to characterize spatial configurations of inlay yarn and ground yarn in a three-dimensional scenario for laid-in weft-knitted fabrics. Loop lengths of the inlay and ground yarn materials were calculated and analyzed under different contact and deformation conditions to estimate material consumption in this complex interlooping layout. Series of laid-in weft-knitted fabrics made of different combinations of ground and inlay yarns were fabricated with the 1 × 1 laid-in loop pattern and tested for the model validation. The comparisons between the experimental and calculated results indicated that the newly developed geometric model favorably agreed with the experimental measurements regarding the ground loop lengths and inlay loop lengths applied in the laid-in weft-knitted structures. The results indicated the applicability of the developed geometric model of laid-in weft-knitted fabrics with similar structural patterns in practical use. The output of this study provides a theoretical and practical reference for structural and physical properties analysis, material consumption prediction, even cost estimation of laid-in weft-knitted fabrics.

Patterns of Lip Print and Fingerprint in Gender Identification: A Cross-sectional Study

Background: Personal identification is one of the key areas in the forensic sciences. A combination of different simple and easily available methods such as lip prints and fingerprints can be used for human identification. Our objective was to analyze the types of lip print and fingerprint patterns in dental students and to identify if they were associated with gender. Methods: This was a cross-sectional comparative study conducted in 150 students (male: female 1:1), aged between 17 to 34 years, from Kantipur Dental College. The lip print and fingerprint patterns were recorded and interpreted based on the Tsuchihashi and Michael Kucken classification respectively. Results: The most common lip print pattern was intersected type (44, 29.3%), while the least common was undetermined type (7, 4.7%). The intersected lip pattern (23, 30.7%) was most prevalent in males and the vertical pattern (28, 37.3%) was most prevalent in females (p < 0.05). The loop-type (82, 54.7%) fingerprint pattern was the most common while the arch-type (19, 12.7%) was the least common. The most common fingerprint pattern in both sexes was loop pattern (38, 50.7%). Conclusions: The type of lip print pattern holds potential promise as a supplementary tool for gender identification. However, fingerprint pattern was not associated with gender.