Design of microwave ceramic waveguide filter with high out-of-band suppression characteristics by Fei LIANG, Shunliang MENG, Wenzhong LYU

“…The design theory of ceramic waveguide filter was introduced, and then the combination structure of coupling through slot with shallow or deep coupling blind hole was designed, which could meet the requirements of positive and negative coupling bandwidth.By adjusting the cross coupling between 3～6 cavities, the symmetry of the filter transmis-sion curve was improved, and the near and far end band suppression of the filter was realized.Finally, a six-cavity ce-ramic waveguide filter for 5G base station was designed.In the process of optimizing the filter, the influences of the rela-tive position offset of the cross-coupling through slot and the length of the cross-coupling through slot on the transmis-sion zero position, the near end and far end out of band suppression characteristics of the filter were discussed in detail, and the relevant change rules were given.The performance indexes of the optimized filter were as follows, center fre-quency was 3.5 GHz, working bandwidth was 200 MHz, insertion loss ≤ 1.2 dB, return loss ≥ 17 dB, near end out of band rejection ≥ 25 dB, far end out of band rejection ≥ 51 dB.According to the structural parameters of the simulation model, the performance test results of the samples are in good agreement with the simulation results.…”
Get full text

Underscoring long-term host-microbiome interactions in a physiologically relevant gingival tissue model by M. Adelfio, G. E. Callen, A. R. Diaz, B. J. Paster, X. He, H. Hasturk, C. E. Ghezzi

“…Abstract The human body houses many distinct and interconnecting microbial populations with long-lasting systemic effects, where the oral cavity serves as a pathogens’ reservoir. The correlation of different disease states strongly supports the need to understand the interplay between the oral tissue niche and microbiome. …”
Get full text

Hernia uterine inguinale as an intraoperative diagnosis of male pseudohermaphroditism: case report by Darit A. Molinares-Perez, Hernando Thorné-Velez, Andrés Polanía-Alvarez, David Cerra-Ortegón, Alex Melo, Rafael Arraut

“…Reduction of the hernial content to the peritoneal cavity was performed and the inguinal defect was resolved with placement of a prosthetic mesh by Lichtenstein technique. …”
Get full text

Schlieren texture and topography induced confinement in an organic exciton-polariton laser by Florian Le Roux, Andreas Mischok, Francisco Tenopala-Carmona, Malte C. Gather

“…Here, we show how introducing Schlieren texturing and a rough intra-cavity topography in a liquid crystalline conjugated polymer enables strong in-plane confinement of polaritons and drastic enhancement of the lasing properties. …”
Get full text

THE STRENGTH OF TRANSVERS ACRYLIC RESIN WITH GLASS FIBER SOAKED IN TEA by Sujati Sujati

“…This is due to the glass fiber filling the cavity in the acrylic resin.…”
Get full text

Intraperitoneal Granulomas Unexpectedly Found during a Cesarean Delivery: A Late Complication of Dropped Gallstones by David A. Suarez-Zamora, Luis E. Barrera-Herrera, Ricardo Caceres-Mileo, Mauricio A. Palau-Lazaro

“…Spillage of gallstones into the abdominal cavity during laparoscopic cholecystectomy occurs in approximately one-third of cases. …”
Get full text

Correlation Coefficient Filtering Method for Optimal Sensor Layout Strategies in Inverse Problems by Qingyang Yuan, Xiangji Guo, Jiajie Han, Bingyue Han, Bo Zhang, Tian Lan

“…The method’s effectiveness is tested using the one-dimensional Burgers’ equation and later the two-dimensional lid-driven cavity flow. The paper introduces two key indicators: expected coefficient of correlation (α) and remaining points (RPs). …”
Get full text

CFD Simulation of Pressure and Velocity Drop on Y-Type Fuel Injectors by Tarun Kumar Kotteda, Sudheer Kumar Varma Namburi, Prasada Raju Kantheti, Ravi Varma Penmetsa, Velivela Lakshmikanth Chowdary

“…The dynamic simulation helped to measure the velocity field, at the outlet of the air nozzle, a cavity with a diameter of 0.4 mm, which helps to increase the kinetic energy of the air. …”
Get full text

A Custom-Made Surgical Guide for Accurate Enucleation of Nasopalatine Duct Cysts: A Technical Note and Case Report by Masako Fujioka-Kobayashi, Naoki Miyasaka, Ayako Miyasaka, Masateru Koyanagi, Ryo Inada, Takahiro Miyasaka, Takafumi Satomi

“…During the nucleation of large cysts extending to the floor of the nasal cavity, care must be taken to avoid damage to the nasal mucosa. …”
Get full text

Acquired Abdominal Intercostal Hernia: A Case Report and Literature Review by Salim Abunnaja, Kevin Chysna, Inam Shaikh, Giuseppe Tripodi

“…Acquired abdominal intercostal hernia (AAIH) is a rare disease phenomenon where intra-abdominal contents reach the intercostal space directly from the peritoneal cavity through an acquired defect in the abdominal wall musculature and fascia. …”
Get full text

An Investigation on the Effect of Endwall Movement on the Tip Clearance Loss Using Annular Turbine Cascade by Hesham M. El-Batsh, Magdy Bassily Hanna

“…The steady incompressible turbulent flow was obtained by solving Reynolds averaged Navier-Stokes equations and by employing shear stress transport (SST) k-ω turbulence model. …”
Get full text

Chylopericardium due to Subclavian Vein Thrombosis in the Setting of Protein S Deficiency by Ian Jackson, Yaman Alali, Abedel Rahman Anani, Ali Nayfeh, Arindam Sharma, Abhishek Thandra, Amjad Kabach

“…Chylopericardium is the accumulation of lymphatic fluid in the pericardial cavity. It can be idiopathic or secondary to trauma, cardiothoracic surgery, neoplasm, radiation, tuberculosis, lymphatic duct dysfunction, thrombosis, or other causes. …”
Get full text

Special Care Dentistry in a Patient with Prader–Willi Syndrome through the Use of Atraumatic Restorative Treatment under General Anesthesia by Caio Vinícius Gonçalves Roman-Torres, Sérgio Takashi Kussaba, Yasmin Comoti Vita Bantim, Roberta de Barros Antunes Almeida de Oliveira

“…The precocious intervention in this 3-year-old patient by the therapy realized with ART under general anesthesia was done with success, avoiding unnecessary extractions, preserving dental elements, and maintaining the oral cavity in adequate function.…”
Get full text

Triplet Delivery following Unilateral Twin Salpingocyesis by Johnson O. Komolafe, Rasaq A. Akindele, Adeniyi O. Fasanu, Callistus A. Akinleye, Taiwo O. Akinbile, Monisayo O. Komolafe, Muyiwa O. Oguntunde

“…Transvaginal scanning done on the 30th day following embryo transfer revealed an empty uterine cavity with two gestational sacs containing active fetal echoes in the right adnexum. …”
Get full text

Dual-Band High Q-Factor Complementary Split-Ring Resonators Using Substrate Integrated Waveguide Method and Their Applications by Mehdi Hamidkhani, Rasool Sadeghi, Mohamadreza Karimi

“…We also proposed a new practical method to develop a wide tuning range SIW CSRR cavity resonator with a small tuning voltage in the second resonator, which leads to about 19% and 1% of tuning frequency band in the first and second bands, respectively. …”
Get full text

Management of Radix Entomolaris of Mandibular First Molar With Complex Root Canal Curvatures: A Case Report and Mini Review by Ali Chamani, Maryam Gharechahi, Reza Shakiba, Farshad Alipour

“…The challenges of RCT and case management in this study are addressed within the framework of paying attention to the access cavity according to the extra root, instrumentation with the crown‐down technique, sufficient irrigation, using nickel–titanium rotary systems, dense obturation with the warm vertical technique, and patient follow‐up. …”
Get full text

Oral submucous fibrosis: a contemporary narrative review with a proposed inter-professional approach for an early diagnosis and clinical management by Naman R. Rao, Alessandro Villa, Chandramani B. More, Ruwan D. Jayasinghe, Alexander Ross Kerr, Newell W. Johnson

“…Abstract Oral Submucous fibrosis (OSMF) has traditionally been described as “a chronic, insidious, scarring disease of the oral cavity, often with involvement of the pharynx and the upper esophagus”. …”
Get full text

Local Drug Delivery Systems for Vital Pulp Therapy: A New Hope by Ardavan Parhizkar, Saeed Asgary

“…Vital pulp therapy (VPT) is deliberated as an ultraconservative/minimally invasive approach for the conservation of vital pulpal tissues, preservation of dental structure, and maintenance of tooth function in the oral cavity. In VPT, following the exposure of the dental pulp, the environment is prepared for the possible healing and probable refunctionalisation of pulpal connective tissue. …”
Get full text

The management of Pancreatic fistula Complicated by Gastric fistulation following Emergency Splenectomy by Tan Jih Huei, Henry Tan Chor Lip, Chow Sing Thou, Yuzaidi Mohamad, Rizal Imran Alwi

“…A double-pigtail stent was inserted via gastroscopy into the fistula tract to allow internal drainage of the pancreatic collection into the stomach cavity. When a pancreatic fistula is complicated by gastric fistulation, endoscopic stenting of the pancreatogastric fistula tract for internal drainage is an effective treatment option.…”
Get full text

Prediction of Pollutant Emissions from Bluff-Body Stabilised Nonpremixed Flames by Nelu Munteanu, Shokri M. Amzaini

“…In this study, bluff-body stabilised methane-hydrogen flames are computed using the steady laminar flamelet combustion method in conjunction with the Reynolds-averaged Navier-Stokes (RANS) approach. These flames are known as Sandia jet flames and have different jet mean velocities. …”
Get full text