bluuebunny/crossref_metadata_2025 huggingface dataset:
ประสิทธิภาพของการฉีดยาโบทูลินัมท็อกซินชนิดเอด้วยเข็มฉีดยาขนาดเล็กในผู้ป่วยโรคใบหน้ากระตุกครึ่งซีก
Authors:   , เมธารักษ์ชีพ สุพพตา
Published: September 2023

ที่มา:  การฉีดโบทูลินัมท็อกซินชนิดเอถือเป็นการรักษาทางเลือกแรกในผู้ป่วยที่มีอาการกระตุกที่ซีกหน้า แต่ผลการรักษาเป็นเพียงชั่วคราว ส่งผลให้เกิดการฉีดยาซ้ำซึ่งเกี่ยวข้องกับความเจ็บปวดและความรู้สึกไม่สบาย แม้ว่าการใช้เข็มขนาดเล็ก (microneedle) จะเป็นวิธีปฏิบัติทั่วไปสำหรับการทำหัตถการบนใบหน้าในเวชศาสตร์ความงาม และมีหลักฐานที่แสดงให้เห็นว่าสามารถลดความเจ็บปวดและลดรอยฟกช้ำ แต่ยังไม่มีหลักฐานการศึกษาในโรคใบหน้ากระตุกครึ่งซีก

วัตถุประสงค์: จุดมุ่งหมายของการศึกษานี้คือเพื่อเปรียบเทียบความรุนแรงและลักษณะของความเจ็บปวดและรอยฟกช้ำจากการฉีดยาโบทูลินัมท็อกซินชนิดเอในผู้ป่วยใบหน้ากระตุกครึ่งซีกด้วยเข็มขนาดเล็ก (34-G) กับเข็มมาตรฐาน (30-G)

วิธีการศึกษาวิจัย:  รูปแบบการวิจัยเป็นการทดลองแบบ cross-over, double-blind, randomized controlled trial ศึกษาในผู้ป่วยโรคใบหน้ากระตุกครึ่งซีกทั้งหมด 62 ราย โดยอาสาสมัครจะได้รับการฉีดโบทูลินัมท็อกซินชนิดเอสองครั้ง ห่างกัน 12 สัปดาห์ด้วยเข็มมาตรฐานและ microneedle อาสาสมัครทุกคนได้รับการฉีดยาด้วยโดยผู้วิจัยคนเดียวกันโดยใช้เทคนิคการฉีดแบบเดียวกัน ปริมาณยาและจำนวนบริเวณที่ฉีดเท่ากันทั้งสองรอบ การวัดผลลัพธ์หลัก ได้แก่ ความรุนแรงและลักษณะของความเจ็บปวด ซึ่งวัดจากแบบสอบถามหลังจากการฉีดด้วย Visual Analogue Scale (VAS) และแบบสอบถาม Short-form McGill Pain Questionnaire (SF-MPQ-2) สำหรับผลลัพธ์รองคือคะแนนรอยฟกช้ำ ภาวะแทรกซ้อนอื่นๆ และประสิทธิภาพของการฉีดโบทูลินัมท็อกซินชนิดเอโดยใช้ Global rating scale และ Comprehensive scale โดยมีการวัดผลที่หนึ่งสัปดาห์และหนึ่งเดือนหลังการฉีด

ผลการศึกษา: อาสาสมัครโรคใบหน้ากระตุกครึ่งซีกจำนวน 62 รายได้เข้าร่วมการศึกษา ส่วนใหญ่เป็นเพศหญิง (72.6%) โดยมีอายุเฉลี่ย 60.18 ± 11.12 ปีและระยะเวลาเป็นโรคเฉลี่ย 5.64 ± 3.98 ปี เมื่อเทียบกับการฉีดเข็มแบบมาตรฐาน การลดลงอย่างมีนัยสำคัญของ VAS (p<0.001), SF-MPQ-2 ทั้งหมด (p<0.001) และคะแนนรอยช้ำ (p<0.001) ถูกแสดงให้เห็นด้วยการฉีดด้วยเข็มขนาดเล็ก อัตราและประเภทของภาวะแทรกซ้อนไม่แตกต่างกันอย่างมีนัยสำคัญระหว่างสองขั้นตอน ประสิทธิภาพระหว่างสองขั้นตอน ซึ่งวัดที่การตรวจวัดพื้นฐาน หนึ่งสัปดาห์ และหนึ่งเดือนหลังการฉีด แสดงให้เห็นถึงผลกระทบด้านเวลาที่มีนัยสำคัญต่อการให้ Global rating scale และ Comprehensive scale ซึ่งบ่งชี้ว่าทั้งการฉีดแบบมาตรฐานและแบบการฉีดด้วยเข็มขนาดเล็กช่วยปรับปรุงผลลัพธ์ของผู้ป่วย

สรุป:  การฉีดโบทูลินัมท็อกซินด้วยเข็มขนาดเล็กในผู้ป่วยโรคใบหน้ากระตุกครึ่งซีกสามารถลดอาการปวดและรอยช้ำได้อย่างมีนัยสำคัญเมื่อเทียบกับเข็มขนาดมาตรฐาน โดยที่มีประสิทธิภาพในการรักษาไม่แตกต่างกัน
การพัฒนาโปรแกรมเสริมสร้างความฉลาดทางวัฒนธรรมของนักศึกษาอุตสาหกรรมบริการเพื่อการสร้างคุณค่า
Authors:   , ธาดาวัฒนาวิทย์ สุรเกียรติ
Published: September 2023

การวิจัยครั้งนี้มีวัตถุประสงค์เพื่อ (1) ศึกษาระดับของความฉลาดทางวัฒนธรรมของนักศึกษาอุตสาหกรรมบริการ (2) พัฒนาโปรแกรมเสริมสร้างความฉลาดทางวัฒนธรรมของนักศึกษาอุตสาหกรรมบริการเพื่อการสร้างคุณค่า (3) ทดลองใช้โปรแกรมเสริมสร้างความฉลาดทางวัฒนธรรมของนักศึกษาอุตสาหกรรมบริการเพื่อการสร้างคุณค่า และ (4) เสนอแนะแนวทางในการนำโปรแกรมเสริมสร้างความฉลาดทางวัฒนธรรมของนักศึกษาอุตสาหกรรมบริการเพื่อการสร้างคุณค่าไปใช้ในการศึกษาระดับอุดมศึกษา ตัวอย่างวิจัย คือ นักศึกษาที่กำลังศึกษาด้านอุตสาหกรรมบริการ จำนวน 532 คน ซึ่งได้มาจากการสุ่มแบบแบ่งชั้น เครื่องมือในการวิจัย ได้แก่ โปรแกรมเสริมสร้างความฉลาดทางวัฒนธรรมของนักศึกษาอุตสาหกรรมบริการเพื่อการสร้างคุณค่า แบบสังเกต แบบสัมภาษณ์ แบบสอบถาม และแบบประเมินผลงานนักศึกษา วิเคราะห์ข้อมูลด้วยการวิเคราะห์เนื้อหา สถิติเชิงบรรยาย สถิติเชิงอ้างอิงโดยใช้การทดสอบที และการวิเคราะห์องค์ประกอบเชิงยืนยัน ด้วยโปรแกรมคอมพิวเตอร์สำเร็จรูป ผลการวิจัยสรุปได้ดังนี้  1) กลุ่มตัวอย่างที่ศึกษามีค่าเฉลี่ยความฉลาดทางวัฒนธรรมอยู่ในระดับมาก เมื่อพิจารณาเป็นรายด้าน พบว่ากลุ่ม ตัวอย่างมีความฉลาดทางวัฒนธรรมด้านแรงจูงใจทางวัฒนธรรมสูงที่สุด รองลงมาคือด้านอภิปัญญาทางวัฒนธรรม ด้านพฤติกรรมทางวัฒนธรรมและด้านปัญญาทางวัฒนธรรม  2) โปรแกรมเสริมสร้างความฉลาดทางวัฒนธรรมของนักศึกษาอุตสาหกรรมบริการเพื่อการสร้างคุณค่า ประกอบ ด้วยการพัฒนาความฉลาดทางวัฒนธรรม 6 ขั้นตอน ได้แก่ การสร้างความตระหนักทางวัฒนธรรม การสร้างประสบการณ์ทางวัฒนธรรม การเผชิญกับสถานการณ์ทางวัฒนธรรม การสะท้อนกลับระหว่างผู้เรียน การอภิปรายแลกเปลี่ยนความคิด และการพัฒนาเป็นแนวปฏิบัติของตนเอง จากนั้นจึงเข้าสู่กระบวนการสร้างคุณค่า 5 ขั้นตอน ได้แก่ การทำความเข้าใจกับกลุ่มเป้าหมายเชิงลึก กำหนดโจทย์ความต้องการของกลุ่มเป้าหมาย การระดมความคิดเห็น การสร้างสินค้าหรือบริการต้นแบบ และการทดสอบ โดยมีระยะเวลาในการเข้าร่วมโปรแกรมจำนวน 30 ชั่วโมง แบ่งเป็นครั้ง ครั้งละ 3 ชั่วโมงจำนวน 10 ครั้ง 3) ระดับของความฉลาดทางวัฒนธรรมของนักศึกษาอุตสาหกรรมบริการหลังการเข้าร่วมโปรแกรมฯ สูงกว่าก่อนเข้าร่วมโปรแกรมอย่างมีนัยสำคัญทางสถิติที่ระดับ .05 โดยเมื่อพิจารณาเป็นรายองค์ประกอบ พบว่า นักศึกษาอุตสาหกรรมบริการมีความฉลาดทางวัฒนธรรมภายหลังการเข้าร่วมโปรแกรมสูงกว่าก่อนเข้าร่วมโปรแกรมอย่างมีนัยสำคัญทางสถิติที่ระดับ .05 ทุกองค์ประกอบ โดยองค์ประกอบที่มีความแตกต่างกันมากที่สุด คือ ด้านปัญญาทางวัฒนธรรม รองลงมาคือ ด้านพฤติกรรมทางวัฒนธรรม ด้านอภิปัญญาทางวัฒนธรรม และด้านแรงจูงใจทางวัฒนธรรม ตามลำดับ 4) การนำโปรแกรมเสริมสร้างความฉลาดทางวัฒนธรรมเพื่อการสร้างคุณค่าไปปรับใช้กับนักศึกษาอุตสาหกรรมบริการสามารถนำไปใช้ได้ในหลายรูปแบบ ไม่ว่าจะเป็นส่วนหนึ่งของรายวิชาที่เกี่ยวข้องทั้งความเกี่ยวข้องด้านความฉลาดทางวัฒนธรรมและแนวคิดการพัฒนาคุณค่า การนำไปเป็นส่วนหนึ่งของกระบวนการพัฒนาศักยภาพของบุคลากรในองค์กร การนำไปเป็นหลักสูตรของสถาบันอุดมศึกษาด้านอุตสาหกรรมบริการ การนำไปปรับใช้ในรูปแบบของสหกิจศึกษาที่ต้องอาศัยความร่วมมือทั้งของสถาบันการศึกษาและสถานประกอบการอย่างชัดเจน การฝึกประสบการณ์วิชาชีพ การเปิดเป็นรายวิชาเฉพาะของระดับอุดมศึกษา รวมไปถึงการเรียนรู้ตามอัธยาศัยตามความสนใจของผู้เรียนเอง และการเรียนเพื่อสะสมหน่วยกิต
Production line process improvement with process reengineering - a case study in garment factory
Authors:   , Palasri Yanin
Published: September 2023

The production process concerns in ABC manufacturing are failing to meet daily production targets and having low productivities. Business Process Reengineering (BPR) is a method of employing process redesign heuristics to improve an existing production line process using an evaluation approach and fit-gap analysis. A simulation tool is used to model the production process redesign. After adopting the provided approach and conducting the simulation, the company's production productivity and service level increases by about 45 percent. To get the required simulation results, critical measurements such as manufacturing capacity and lead time are used. This research demonstrates the redesign production process that must be followed in order to overcome the critical issues.
Susceptibility investigation of debris flow, landslide and flood hazards using topographic index in Nakhon Si Thammarat province
Authors:   , Jaitum Nutsorn
Published: September 2023

Nakhon Si Thammarat (NST) is one of the cities in Southern Thailand that is vulnerable to geohazards such as debris flows, landslides, and flooding, all of which have the potential to cause significant damage to people and property. To identify hazard susceptible areas, terrain analysis techniques based on a Digital Elevation Model (DEM) with a resolution of 12.5 meters were used in this study. The Statistical Index (SI) was applied in relation to six parameters to indicate landslide-prone areas. Meanwhile, the Frequency Ratio (FR) was analyzed in relation to ten parameters to indicate debris flow susceptible areas. The Hydromorphometric Contrast Index (HCI) was used to define flood-prone areas by evaluating five parameters. According to the result, the landslide susceptibility map can be classified into five levels. The western mountains of Nakhon Si Thammarat were found to have high and very high susceptibility. Additionally, the debris flow susceptibility in this area can be divided into five levels, with the high and very high classes discovered in the Khao Luang Mountain around the center of Nakhon Si Thammarat. Furthermore, the study's findings on flood susceptibility can be classified into four levels. The highly sensitive areas were found in the central part of Khanom district in Nakhon Si Thammarat. The receiver operating characteristic (ROC) curve was used to validate the accuracy of the results. The results revealed that the area under the curve (AUCs) for the Si, Fr, and HCI methods are 56.6%, 43.5%, and 98%, respectively, indicating a practically identical predictive capacity.
Approaches for developing management towards excellence of schools in Banteay Meanchey based on the concept of creative self-efficacy
Authors:   , Lim Dalin
Published: September 2023

The purposes of this study were to 1) study the conceptual framework for developing management towards excellence of schools in Banteay Meanchey based on the concept of creative self-efficacy, 2) study the priority needs for developing management towards excellence of schools in Banteay Meanchey based on the concept of creative self-efficacy, and 3) propose approaches for developing management towards excellence of schools in Banteay Meanchey based on the concept of creative self-efficacy. The study employed descriptive research approaches. The study sample was the 28 public high schools in Banteay Meanchey province. They were selected using simple random sampling. The informants consisted of directors, deputy directors, and teachers; in total, 215 people. The research instruments used in the study were questionnaires and evaluation forms. The collected data was analyzed using  Frequency, Percentage, Mean, Standard Deviation, Modified Priority Need Index (PNI modified), and Content Analysis.  The findings revealed that 1) The conceptual framework for developing management towards excellence of schools was composed of Leadership; Strategy; Students and Stakeholders; Management, Analysis, and Knowledge Management; Workforce; Operational; and Results. The conceptual framework of creative self-efficacy was composed of creative thinking self-efficacy and creative performance self-efficacy. 2) The highest priority needs for developing management towards excellence of schools was rated on the Measurement, Analysis, and Knowledge Management criterion, while the lowest priority needs was rated on the Leadership criterion. 3) There are five main approaches for developing management towards excellence of schools in Banteay Meanchey to enhance students' creative self-efficacy: 3.1) Establish a welcoming climate for students’ and stakeholders' engagement, 3.2) Foster the context of Teach for Learn more than Teach for Test, 3.3) Design future-focused strategic plan to bring about nurturing creativity 3.4) Design the new paradigm of teacher professional development, and 3.5) Cultivate innovative-driven leadership to foster change and execute the current status quo.
Approaches for developing academic management of secondary schools in Cambodia based on the concept of exemplary leadership
Authors:   , Pheach Soksamnang
Published: September 2023

The purposes of this study were 1. to examine the exemplary leadership level of Cambodian secondary school students in Battambang Province and to study the priority needs of academic management development of secondary schools in Cambodia based on the concept of exemplary leadership, 2. to develop the approaches for developing the academic management of secondary schools in Cambodia based on the concept of exemplary leadership. The data were collected from 12 sample schools, choosing one school to represent one district. The study informants included school principals, vice-principal, teachers, and students in Battambang province accounting for 169. The research instrument used in the study was asked to complete with the five-point Likert scale. Data were analyzed using descriptive statistics (mean, standard deviation, frequency, percentage, modified priority need index (PNI modified)), inferential statistics (independent sample t-test and one-way Analysis of Variance (ANOVA)), and content analysis.

The findings revealed that 1. Students’ exemplary leadership level was slightly high. The highest exemplary leadership level of secondary school students overall was ‘encourage the heart’ and the lowest was Inspire a shared vision. Regarding gender, educational level, and grade there was no significant difference. The highest priority needs for developing academic management was Curriculum development, followed by Measurement and Evaluation, then Teaching and Learning while the lowest priority need was Student affairs. Considering the highest priority need of exemplary leadership dimensions was Model the way and the lowest priority need was Encourage the heart. 2. Approaches for developing academic management consisted of four approaches: 1) modify secondary school curriculum focus on students' exemplary leadership on Challenge the process, Model the way, and Enable others to act, 2) improve secondary school teaching and learning focus on students’ exemplary leadership on Model the way and Inspire a shared vision, 3) improve secondary school measurement and evaluation focus on students' exemplary leadership on Model the way and Challenge the process, 4) enhance the quality of student affairs focus on students' exemplary leadership on Encourage the heart and Enable others to act, and sixteen procedures.
Deep learning with attention mechanism for iterative face super-resolution
Authors:   , Duangprom Krit
Published: September 2023

Face images are widely used in many applications, such as face recognition and face identification. Regarding security, face identification is used to track the crimes. However, the camera's low resolution and environmental degradation problem hinders the face application's performance. In this thesis, we study face image super-resolution to restore the image from low-resolution to high-resolution.

We proposed deep learning with an attention mechanism for iterative face super-resolution that included an image super-resolution network and face alignment network combined. The input low-resolution image is enlarged into a super-resolution face image. Then, the image has repeatedly estimated the alignment to enhance the super-resolution image.

The experiment was conducted on well-known facial datasets. Peak Signal to Noise Ratio (PSNR) and Structural Similarity (SSIM) are measured for objective performance evaluation. The performance of the proposed method is compared with bicubic interpolation and other referenced methods. The experimental results demonstrate that the proposed method has the highest performance compared with other reference methods.
Deployment of RFID, GPS and IOT technology for medical specimen logistic system
Authors:   , Chit Mya
Published: September 2023

This paper aims to implement a specimen logistic system using RFID technology combined with modern IoT technology in Chulalongkorn hospital. The specimen is a sample collected from the human body. Samples can be urine, saliva, sputum, feces, semen, and other bodily fluids and tissues. Samples are usually collected from the patient and stored in a test tube. Then test tubes are delivered to the corresponding laboratory for examination. Normally, barcodes are tagged over the test tubes for the purpose of recording patient information. In this work, RFID is deployed on the test tube instead for patient data logging. This solution overcomes the limitations imposed by using the barcode labels. RFID tag, which is attached on the test tube, has a memory to store patient information which can be written by using an RFID reader. While test tubes being in transit from one department to another, they are kept in a specimen transport cooler box to maintain their quality in proper temperature and humidity. In addition, IoT sensor and GPS system are employed inside the cooler box to provide the temperature and humidity values, as well as the location tracking, which can be accessed via the cloud platform. In summary, the proposed new combination of RFID, GPS, and IoT technologies for medical specimen logistic system can make better and simpler system for specimen transportation and management.
Mitigating sinkhole attack on low-power and lossy networks with traffic aware scheduling algorithm using dual parent mechanism
Authors:   , Maung Tay
Published: September 2023

Low-Power and Lossy Networks (LLN) are networks where all the routers and IoT devices are working on a limited power, memory, and computational energy. Due to the constrained structures of LLN networks such as limited resources, lossy connection and lack of physical security, security attacks can occur when routing in an LLN network. The Routing Protocol for Low-Power and Lossy Networks (RPL) was developed to meet the needs of multiple applications in the fields of Wireless Sensor Networks (WSN) and Internet of Things (IoT). Some sensor nodes in a RPL network are not strong enough to withstand a variety of attacks, such as a sinkhole attack. This type of attack can damage the network by itself or in conjunction with other attacks. The attacker can easily create attacking behavior and can cause serious isolation from the network and loss of delivered packets of the network traffic. As the damage of sinkhole Attack in the RPL network is very big and it makes a high impact to the network, position of the attack node is very important in the network, and it can make a huge network isolation and loss the high percentage of traffic loss. This thesis studies the damage of Sinkhole attack in RPL networks and proposed the simple and very effective way of defense mechanism to mitigate that sinkhole attack. Our proposed method, making a dual-parent formation for each child node in the network when the topology is set up, is the effective way to defense the Sinkhole Attack. This thesis also implements the traffic load balancing of the network by applying Traffic Aware Scheduling Algorithm (TASA). Applying the TASA in the RPL network topology is a good way to concern the total traffic load of our data acquisition network, avoid the collision between child nodes and parent node transmission and reduce the time and delay of the network. Results show that we can mitigate the sinkhole attack and fully deliver the total traffics of the network. And this thesis compares the number of time slots and packets loss in both mechanisms, with and without dual parent, under sinkhole attack and details of time slots comparison of one attacking behavior to check the correctness of our proposed method and simulation. Finally, we can conclude that our dual-parent sinkhole attack defense mechanism is worked well by checking the comparisons results.
Fuzzy AHP for supplier selection: a case study in an electronic component manufacturer
Authors:   , Tsai Chia
Published: September 2023

Supplier selection has become an essential effect on the entire electronic supply chain network on performance. The case study company produces a nano sim-card connector which four primary raw materials are processed into four primary parts (Plastic, Nickel, Phosphor bronze, and Stainless steel). Nevertheless, the case study company faces a penalty and order reduction because of the quality issue. Although an appraisal record from the case study company is able to select a proper raw material supplier, the cost becomes the priority when the candidate suppliers are categorized as the same level, leading to increasing potential risks, e.g., a penalty, rework in OEM, and order reduction. Additionally, the appraisal record is measured by the procurement team that the probability bias and personal preference tend to affect the final decision. This thesis proposes a Fuzzy Analytic Hierarchy Process (Fuzzy AHP) model for raw material supplier selection by collecting data from two departments (Procurement and Engineering) and clients to address qualitative and quantitative elements, uncertainty, and linguistic vagueness based on the case study company scenario in three parts. First, the main criteria and sub-criteria are selected by related decision makers. Second, the Fuzzy AHP is proposed to identify scores for each raw material supplier. Then, the sensitivity analysis is applied to observe how the decision changes when the model parameters, e.g., the quality consistency, delivery delays, etc., change. The proposed model can offer better information and solutions for the DM in the case study company to differentiate the crucial main criteria and sub-criteria and select the suitable raw material suppliers effectively.
Effects of configuration and operating conditions on turbidity removal of jet clarifier
Authors:   , Romphophak Ploypailin
Published: September 2023

In water treatment, flocculation creates large and weighty flocs enough to be removed by the downstream processes of sedimentation and filtration. Among the various existing technologies, the jet clarifier is considered as an effective and compact system as it couples flocculation and clarification in a single unit. For the design of jet mixing, much experimental work has been done and many correlations have been proposed. However, these correlations are case specifics, and, to date, there is no comprehensive view for the flocculation aspect.

In order to evaluate the performance of the jet clarifier for turbidity removal and understand hydrodynamics to propose the optimal operating conditions and design criteria, two different configurations of the continuous jet clarifiers are figured out. The first one is a prototype of a 3D jet clarifier studied at two scales and implemented at Samsen Water Treatment Plant, Thailand; these two reactors were designed to investigate the performance and mean Residence Time Distribution (RTD) for various injected flow rates. The results indicated no effect of reactor sizes, and a reduction of the initial turbidity (50 NTU) was achieved with an efficiency of approximately 80% under optimal conditions.

Moreover, the second jet clarifier configuration was designed as a Quasi-2Dimensional (Q2D) jet clarifier at the TBI-INSA-Toulouse, France allowing the application of optical metrological methods used to understand better local phenomena controlling the efficiency of the jet clarifier. Hence, measurements of instantaneous velocity field were performed by means of Particle Image Velocimetry (PIV). The processing of experimental PIV data highlighted a strong circulation induced by the jet in the flocculation zone. At this location, the range of velocity gradient (G) is 3 to 13 s-1 whereas the residence time decreases from 4 to 1 hour. Based on the hydrodynamic analysis, the Camp number (Gt) in the flocculation zone is shown to be constant at around 7,000 for different jet flow rates (from 11L/hr to 49L/hr). The efficiency of such the jet clarifier can thus be foreseen. Plus, measurements of the number of flocs and their size distributions were performed by means of shadowgraphy and image analysis. Thanks to a coupling between the different experimental results obtained in the Q2D jet clarifier, it was possible to relate the evolution of the number of flocs along the jet to the recirculation loop present in the flocculation zone. The relative independence of the floc size distributions on the flow rate is discussed in light of the Camp number, which can explain the efficiency of the jet clarifier in terms of flocculation.

Finally, due to reactor design, the simulations using CFD code showing encouraging results were presented at the end of the manuscript. Here as well, characteristic time scales and velocity gradient were used to perform the first comparisons.
A comparison of implant stability between two dental implant designusing two different stability measuring technique
Authors:   , Chaksupa Chanikarn
Published: September 2023

Objective To investigate the primary stability of aggressive thread design implant comparing to nonaggressive thread design implant and to evaluate the correlation between ISQ values and IST values. Materials and methods 96 implants were used in this study. 48 BLT Straumann® and 48 BLX Straumann® were used. All implants were digitally planned and placed in 3D printed model using computer assisted guided surgery. The edentulous area at models were packed with randomized pattern of four different kinds of polyurethane blocks to replicate mixed cancellous bone. Postoperative implant stability measurement was performed immediately after implant insertion. Implant stability was measured by Osstell ISQ for ISQ value and AnyCheck for IST value. The data was analyzed using Spearman correlation and Mann-Whitney U test. Results The mean ISQ value was 67.87 and 65.87, for BLX and BLT respectively. While, the mean IST value was 71.30 for BLX and 69.25 for BLT. The primary stability between BLX and BLT found no statistically significant difference in both ISQ value and IST value. There was a significant correlation between ISQ value and IST value. Conclusion The aggressive thread design implant (BLX) and nonaggressive thread design implant (BLT) has no statistically difference in both ISQ and IST groups. Moreover, there was a correlation between ISQ and IST in both implant design.
Accuracy comparison of dental implants obtained by dynamic CAIS in All-on-4 edentulous area among different types of bone density: an in vitro study
Authors:   , Pornpolsarun Jutasinee
Published: September 2023

Background: Determination of available bone is particularly important in implant placement  quality of bone can affect the accuracy implant placement. Currently, Dynamic navigation system illustrated the improvement of implant accuracy, The accuracy of implant placement using computer-assisted implant placement system (CAIS) is unknown. As a result, the goal of this study was to see how bone density affected implant placement accuracy with Dynamic CAIS.

Purpose: To determine the effect of different bone density in the accuracy of implant placement using dynamic navigation system

Materials and Methods: The study's overall design includes a single doctor planning each implant using a CBCT scan of a jaw model and performing a mock operation and implant delivery on a maxilla model while employing dynamic CAIS in various bone densities, all while following the All-on-4 protocol. To verify accuracy, the implant's placement and axis are compared to the implant plan. Oneway ANOVA and Welch test were used to determine differences between groups, and the Post Hoc test (Tukey HSD and Games-Howell) were used to determine differences within groups, The Pearson correlation coefficient was used to assess the relationship between each bone type and implant accuracy parameters. with 0.05 significant level.

Results: There were no significant differences were found between four groups of bone density in all parameters; The angular deviation(p=0.324), Implant 3D platform deviation (p=0.8933) and 3D apex deviation(p=0.61). However, the lowest bone density group(type4) illustrated the highest deviation for all implant deviation differences between groups, the result trend towards negative correlation between bone density and the accuracy of implant placement in angular deviation (P= 0.59) and apex deviation (P=0.55).

 Conclusions: Within the limits of our investigation, the influence of bone condition on implant placement accuracy with dynamic computer-guided surgery is statistically unaffected
A comparison of implant stability between two implant systems using guided surgery in inexperienced surgeons
Authors:   , Supachaiyakit Pinmuk
Published: September 2023

Aim: To investigate the implant stability in relation to two different implant designs, a cylindrical shaped single threaded design (CS/ST) and a tapered shaped double threaded design (TS/DT) using RFA over the first 8 weeks. Materials and Methods: 28 implants were randomly allocated into two groups and were placed as single tooth implant in the posterior arch. CBCT scan was used to determine the bone density and the implants were placed with guided surgical template by inexperienced surgeons which were prepared with the same implant planning software. The implant stability was measured using the RFA over the first 8 weeks at 3 points intervals. A mean ISQ value was recorded at each time points. The first ISQ of each implant recorded at the time of implant placement were the so-called primary stability. Results: A similar pattern of implant stability changes was observed. A significant decreased was found at the first four weeks after implantation (P<0.05) before ascending to maximum cumulative stability by the 8th week (p<0.05). Between the 2 groups, TS/DT group had a higher mean ISQ values at all three observation periods but did not reach statistical significance (P=0.69). Regarding different types of bone, TS/DT showed a significant difference in mean ISQ values in D4 bone. Conclusions: The difference in implant design did not significantly influence the implant stability however, TS/DT shows superiority over CS/ST when placed in D4 bone.
Investigation of statistical seismology in Thailand-Laos-Myanmar borders
Authors:   , Neanudorn Manunchaya
Published: September 2023

The purpose of this research is to understand more about the statistical seismology of the Thailand-Laos-Myanmar border in order to monitor earthquake activity and locate potentially dangerous area. The seismicity data was collected from the Thailand Meteorological Department. Following that, the catalog's homogeneity and completeness were improved. The first step is to identify the earthquake activity by using the adaptive frequency-magnitude distribution. The results are that Nan province, Thailand, and south Luang Prabang, Laos are the highest activity areas which can generate a maximum magnitude of 5.1 ML, 5.6 ML, 6.3 ML, and 6.7 ML in 5, 10, 30, 50 years. The return period with the ML of 4.0, 5.0, 6.0, and 7.0 was 1, 5, 20, and 75 years. The probability of the occurrence of the earthquake with the ML of 4.0, 5.0, 6.0, and 7.0 was 100%, 100%, 70-100%, and 20-60%, respectively. Then, identify the prospective area using three methods: b value, Z value , and RTL algorithm. After performing iterative tests on three methods with the appropriate parameterd, reasonable estimates of the anomalous precursors. Overlaying maps of those three methodologies makes it possible to identify prospective places for a coming major earthquake. The Thailand-Myanmar border region, Nan province, Thailand, and southwest of Luang Prabang, Laos are the most risk areas for the earthquake in the future.
Stratigraphy and Paleoenvironment of thong Pha Phum group in Kanchanaburi province
Authors:   , Maneerat Warunee
Published: September 2023

The purposes of this study are to establish the detail lithology, stratigraphy, lithofacies and systematic paleontology of marine Silurian-Devonian sedimentary rocks of the Thong Pha Phum Group in Ban Tha Kraden, Si Sawat District, Kanchanaburi Province, and to interpret and reconstruct its depositional environment.

The Thong Pha Phum Group is well exposed in the study area. It consists mainly of shale, siltstone, sandstone, limestone, argillaceous limestone, calcareous shale, calcareous mudstone, and laminated mudstone with the many fossils such as graptolites, tentaculites, ostracods, brachiopods, nautiloids and trilobites. These strata are conformably underlain by the Thung Song Group (Ordovician age) and are conformably overlain by the Khuan Klang Formation (Early Carboniferous age). Abundant tentaculites were recognized and they consist of 7 species belonging to 3 genera: Nowakia acuaria, Nowakia (Cepanowakia) pumilio, Styliolina fissurella, Styliolina clavulus, Styliolina sp. A, Homoctenus tikhyi, and Homoctenus arctus indicating Early to Late Devonian age. In addition, graptolites (Monograptus sp. and Diplograptus sp.) were found in this area and they indicate probably Silurian? to Early Devonian. Based on the lithology, lithofacies, sedimentary structure, and fossils contains, they suggest that the Thong Pha Phum Group was deposited on the slope environment to deep marine basin in low energy conditions.
The Application of Machine Learning in Clustering Borderline Mild Cognitive Impairment among Aging Thai People Living with HIV
Authors:   , Hiransuthikul Akarin
Published: September 2023

Many people living with HIV (PLWH) have cognitive impairment. Details of cognitive impairment subtypes are lacking. Unsupervised machine learning (ML) can reveal hidden subgroups within heterogeneous data. The study aimed to determine clusters of aging Thai PLWH with borderline cognitive impairment using unsupervised ML. HIV-NAT 207 study enrolled Thai PLWH aged ≥50 years. Cognitive performance was evaluated by the Thai-validated Montreal Cognitive Assessment (MoCA). This study included participants who scored between 23 and 27. The score of each cognitive domain served as cluster variables for the K-means algorithm. Among 340 PLWH, 177 (52.1%) scored between 23 and 27. Median age was 54 (IQR = 51-58) years, 118 (66.7%) were male, median CD4 was 620 (IQR = 489-795) cells/µL, and 170 (96.1%) were virally suppressed. K-means cluster demonstrated five clusters of all participants: 22.0% cluster 1 (marked memory with mild language impairment), 25.4% cluster 2 (mild visuospatial/executive function-language-memory impairment), 19.2% cluster 3 (moderate abstraction with mild visuospatial/executive function-language-memory impairment), 18.6% cluster 4 (marked language with mild memory impairment), 14.7% cluster 5 (marked language-abstraction impairment). A longitudinal study is warranted to identify differences in clinical significance and prognosis between each cluster.
Evaluation of cadmium bioaccumulations in Pak Choi grown by hydroponics system
Authors:   , Jinsart Piyachet
Published: September 2023

Cadmium is one of the most harmful heavy metals reported to contaminate the food chain and pose a high risk for health, including non-carcinogenic and carcinogenic effects. High levels of cadmium contamination due to industrial effluent discharge have been reported to affect plant growth and productivity, which could be used as a bio-indicator for cadmium bioaccumulation in plants. The utilization of cadmium-contaminated water for vegetable production has been known to increase the health risk for human consumption. Moreover, pH level was known as a factor affecting cadmium solubility and cadmium uptake by plants. However, there is still unknown about critical pH level that is associated with high cadmium concentrations in water resources used in agriculture (e.g., river, lake, effluent, etc.) and results in bioaccumulation and health risk of vegetable consumption grown by the cadmium contaminated water. In this study, pak choi as a model plant in a hydroponic setup was used to access cadmium bioaccumulation and the health risk of vegetable consumption. The experiment was conducted using four initial cadmium doses (control: 0 mg/L, 1 mg/L, 2 mg/L, and 3 mg/L) in a four-week operation. Three initial pH levels (7.5, 6.5, and 5.5) were used for experiments I, II, and III, respectively. The study was designed to use nitrogen and phosphorus levels at low concentrations (ammonium = 0.91 ± 0.36 mgN/L, nitrate = 0.50 ± 1.4 mgN/L, phosphate = 0.23 ± 0.10 mgP/L), which were in range of wastewater effluent and natural water for agricultural reuse. Results show that cadmium concentrations of 1-3 mg/L significantly inhibited pak choi growth (p < 0.05) compared with the control. Bioaccumulation in plant roots (0.035–2.963) and leaves (0.434–1.038) occurred with an increase in cadmium concentration (p < 0.05), suggesting that cadmium ions were translocated from water to roots and accumulated in the edible part of pak choi (leaves and stems). The highest cadmium available in water (2.67 ± 0.1 mg/L) was found at the initial pH of 5.5 due to the solubility of cadmium at the acidic pH level. Based on US EPA average daily intake and health risk assessment, it was found that consumption of pak choi grown by the cadmium contaminated water resource in the range of 1 to 3 mg/L will not cause chronic non-carcinogenic (hazard quotient <1) but can cause carcinogenic effect (cancer risk > 10-6) over 30-year consumption. Therefore, it is recommended that the monitoring of cadmium in water for agricultural use must be regulated strictly.
Investigation of copper and zinc contaminations in bioponic systems using chicken manure fertilizer
Authors:   , Aksorn Satja
Published: September 2023

The bioponic system is a system that utilizes biological waste as a nutrient-rich source such as chicken manure fertilizer for plant growth integrated with aquaponic. At present, chicken manure fertilizer is contaminated with Cu and Zn may have the potential health effects through vegetable consumption. The objective of this study was to evaluate nitrogen transformation, nitrogen recovery, and plant growth in chicken manure-based bioponics at Cu (50–150 mg/kg) and Zn (200–600 mg/kg) supplementation and investigate the effects of Cu and Zn supplementations on plant bioaccumulation, root microbial community, and dietary health risk. Cu and Zn concentrations were analyzed using inductively coupled plasma-optical emission spectrometry (ICP-OES). The result found that the average TKN was ranged from 11.2 ± 0.5 to 19.4 ± 1.8, TAN was 1.1 ± 0.8 to 1.5 ± 1.8 and NO3¯ was 11.6 ± 4.0 to 14.9 ± 4.7 mgN/L for lettuce cultivated, while pak choi cultivated TKN was ranged from 16.3 ± 0.1 to 19.4 ± 1.8, TAN was  0.7 ± 0.4 to 0.9 ± 0.5 and NO3¯ was 8.8 ± 6.8 to 10.1 ± 6.8 mgN/L respectively. These studies have shown that heavy metal contamination in chicken manure does not significantly affect nitrogen concentration and nitrogen use efficiency by plants ( significant level p < 0.05). The concentrations of Cu and Zn were found in lettuce shoot and root ranged  5.6 ± 0.1 to 7.2 ± 1.0 mg/kg and 64.8 ± 13.8 to 89.9 ± 2.6 mg/kg, while in pak choi was ranged 1.3 ± 0.3 to 4.1 ± 2.9 mg/kg and 43.3 ± 1.5 to 119.8 ± 34.1 mg/kg, respectively. Furthermore, the relative abundance of bacterial communities of lettuce and pak choi roots-based bioponics at phylum level was found Proteobacteria and Planctomycetes are dominant highest relative abundance respectively. However, the result of the health risk assessment was showed that HQ and HI < 1, which does not exceed the acceptable level. This study indicated that consuming lettuce and pak choi-based bioponic systems did not cause any human health effects or health risks to children and adults.
Queering The Migrant Experience: Gay Filipino Workers’ Performance of Gender and Sexual Identities in Bangkok
Authors:   , Madanguit Hans
Published: September 2023

The Philippine migration scholarship heavily focuses on heteronormative issues that depict the migrant workers as heterosexuals. Due to this trend, there is a scarcity of studies on overseas Filipino workers who identify as part of the Lesbian, Gay, Bisexual, Transgender, and Queer (LGBTQ+) Community. Hence, this qualitative research focuses on eleven documented Filipino workers in Thailand who are males assigned at birth and identify as gay homosexuals. Individual informal interviews were employed to investigate how they practice their non-normative gender and sexuality, given their multiple yet intersectional social identities in a country with vibrant queer cultures. It also probes the relationship between the queer Filipino migrant laborers and the Thai capital Bangkok’s queer spaces and how they influence one another. By drawing my analyses on queer theory to simultaneously engage the three disciplines of sexuality, spaces, and migration, the research exposes the critical role of queer spaces in the formation and confirmation of the migrants’ gender and sexual identities through their experience in finding acceptance and belongingness as well as satisfying their romantic and sexual pursuits in both physical and online gay-oriented spaces. The investigation led to a realization that their presence in these spaces became a contributing factor in the intensification of existing issues on the function and significance of gay spaces, such as its heterosexualization and reinforced gay audience segmentation while homonormalization is happening in heterosexual spaces, which may all have a serious impact on the future of queer cultures that Thailand had cultivated for more than half a century. This observation banks on the idea that although space is helpful in an individual’s identity formation, an individual is basically the creator of space because it is social. Queering the migrant experience presents the importance of gender and sexuality as identities in the migration process as the performance of these identities by migrant laborers allows them to be molded by the spaces they consume and, on the one hand, be active stakeholders that influence and manufacture the meanings of these spaces. Hence, being gay, homosexual, and migrant workers are fundamental roles in the flourishment of sexual identities, practices, and communities.
Moderated neutron detector for accumulated ambient dose equivalent in proton therapy
Authors:   , Tawonwong Tanawat
Published: September 2023

The Varian ProBeam compact was installed at Her Royal Highness Princess Maha Chakri Sirindhorn Proton Center. Since 2017, the project has started at the King Chulalongkorn Memorial Hospital and after 4 years, during Covid19 pandemic, the 1st patient treatment received proton therapy on August, 2021. The radiation safety of the center was accomplished through firstly, the shielding calculation and secondary, the radiation survey at the milestone points such as cyclotron installation and 1st Beam ON at the treatment room. The only one WENDI-II dosimeter was used in radiation survey. The main purpose of this study is to validate the in-house neutron moderator based on CR-39 detector, Chulalongkorn University Neutron Moderator (CUMOD) through the ambient dose equivalent measurement, H*(10) and designed to use with proton pencil beam scanning, PBS of energy up to 250 MeV. The PHITS MC was used to simulate the neutron response function of CUMOD. The calibration of CUMOD was performed using 241AmBe source in the range of 100 to 1000 µSv. The H*(10) from CUMOD were compared with the one from WENDI-II. The variation of neutron fields was generated from various proton plans to cover most of the clinical scenarios. The linearly relationship between CUMOD and WENDI-II was observed with the factor of 0.64. The H*(10) per therapeutic dose was in the range of 0.018 to 0.105 mSv/Gy for 10 * 10 cm2 at 1 m distance. The advantage of CUMODs is the ability to measure H*(10) in various positions instantaneously.
Dosimetric impact of interplay effects inStereotactic Body Radiation Therapy (SBRT) lung cancer
Authors:   , Poolnapol Vanida
Published: September 2023

Lung cancer patient breathing induced interplay effects in the volumetric modulated arc therapy (VMAT) together with stereotactic body radiation therapy (SBRT), which lead to non-uniform doses within the target volume and unwanted dose to the surrounding tissues. The purpose of this study was to investigate the dosimetric impact of interplay effects in 6 MV FFF of photon beams for lung cancer and to calculate the novel interplay effects factor (IEF) for VMAT-SBRT lung cancer. This study performed the static and dynamic measurements using two dimensions (2D) robotic platform and diode array for 3D-conformal radiation therapy (3D-CRT) plans, while using three dimensions (3D) CIRS dynamic thorax phantom and EBT3 films, and CC01 ionization chambers for VMAT-SBRT plans.  The 3D-CRT results, the 1%, 1mm of gamma passing rates decreased for higher amplitudes.  However, gamma passing rates increased with larger field sizes.  For other parameters, no interplay effect was detected.  The VMAT-SBRT results showed that higher amplitudes, more dimensions, and smaller doses are more pronounced. Therefore, the IEF calculation parameters consisted of these three mentioned factors.  The 10.13 was the suitable number to be used as the cut point of lung VMAT-SBRT for applying respiratory motion management.  The interplay effects for 6 MV FFF photon beams in VMAT-SBRT lung cancer are more impacted for the higher amplitudes and dimensions, and the smaller doses. The breathing amplitudes above 5 mm lead to significant changes in the shape of dose distribution due to the interplay effects, especially for 3D movements.  The novel interplay effects factor (IEF) is a parameter that can indicate the interplay effects directly for VMAT-SBRT lung cancer patients. The value of 1 is the ideal score of IEF, while a value more than 10.13 is the score that can imply the need of respiratory motion management.  However, the score is lower than 10.13, but that case provides some tumor motion that exceeds 5 mm in all directions, the need for respiratory motion management was also recommended.
Localization Chulalongkorn University
of the infraorbital foramen and the accessory infraorbital foramen with reference to facial bony landmarks: the predicting method and its accuracy.
Authors:   , Suntiruamjairucksa Jiraporn
Published: September 2023

The infraorbital nerve block is commonly used for mid-facial anesthesia. Therefore, the location of infraorbital foramen (IOF) and accessory infraorbital foramen (AIOF) where the nerve exits through is important. Although, many studies tried to identify the location of IOF and AIOF using bony and soft tissue landmarks, the results varied in each study. Objectives To determine the location of IOF and AIOF with reference to the line between anterior nasal spine (ANS) and the lowest point of the zygomaticomaxillary junction (Z) which is defined as line A, describe anatomical relationship between IOF and AIOF, and assess an accuracy of the proposed predicting method. Methods A total of 216 skulls were examined. Live images were analyzed under the stereoscopic microscope. For localization of IOF, the vertical distance from IOF to line A (B) and the mean ratio of the distance between ANS and the intersecting point of the vertical line from IOF with line A (D) to distance A were analyzed. If AIOF was identified, all distances were measured similar to IOF. To assess an accuracy of the predicting method, 15 cadavers were studied by measuring the distance error between the predicted and the real foramen. Results There were 86 AIOFs. Most of them located superomedial to IOF except for 3 AIOFs which located in the inferolateral position. The location of IOF was predicted by using the vertical line B which was 15.14 ± 1.99 mm and the mean ratio of distance D to distance A (D:A) which was 63.35 ± 3.9%. For localization of AIOF, the mean vertical distance was 19.34 ± 3.36 mm and the mean ratio was 51.8 ± 5.9%. No statistically significant difference was found between sex and sides. In cadavers, the mean distance error of the predicted IOF was 1.10 ± 1.44 mm lateral and 0.59 ± 1.39 mm inferior to the real IOF and there were 50% of the predicted IOFs that accurately located within the real IOF. Therefore, this study provides an alternative method for localization of IOF and AIOF which could be useful in clinical settings.