Vol. 228 No. 10 (2023): NATURAL SCIENCES - ENGINEERING - TECHNOLOGY

NATURAL SCIENCE – ENGINEERING – TECHNOLOGY

• ANALYZING FLOW OF AHMED BODY IN YAW ANGLE CONDITION

  Pham Van Duy, Nghiem Hoang Long, Le Dinh Anh, Tran The Hung

  3 - 11

  • PDF (Vietnamese)
• FLOW ANALYSIS ON SLOPED SURFACES WITH DIFFERENT INCLINATION ANGLES

  Nghiem Hoang Long, Pham Van Duy, Le Dinh Anh, Tran The Hung

  12 - 19

  • PDF (Vietnamese)
• AN ITERATIVE LINEAR PROGRAMMING-BASED MODEL USING FICTITIOUS NODAL DEMAND FOR SOLVING THE OPTIMAL POWER FLOW PROBLEM IN POWER DISTRIBUTION SYSTEMS

  Ha Duy Giang, Duong Duy Long, Pham Nang Van

  20 - 28

  • PDF (Vietnamese)
• THE HIGHER TOPOLOGICAL COMPLEXITY OF GENERIC ARRANGEMENT

  Tran Hue Minh*, Nguyen Van Ninh

  29 - 34

  • PDF (Vietnamese)
• NEWTON - KRYLOV - NEDZHIBOV METHOD SOLUTIONS TO A SYSTEM OF NONLINEAR EQUATIONS WITH QUADRATIC CONVERGENCE RATE

  Lai Van Trung, Quach Thi Mai Lien

  35 - 41

  • PDF (Vietnamese)
• AUTOMATIC CONTROL OF BLACK TEA FERMENTATION TECHNOLOGY PARAMETERS BASED ON FUZZY LOGIC AND COMPUTER VISION

  Lai Khac Lai, Pham Thanh Binh

  42 - 50

  • PDF (Vietnamese)
• REMOVAL OF RHODAMINE B USING MESOPOROUS CACBON MATERIALS WITH SBA-15 AS TEMPLATE

  Nguyen Thi Hong Hoa, Pho Viet Hoang, Dang Thi Ly, Vu Xuan Manh

  51 - 57

  • PDF (Vietnamese)
• A TYPICAL REVIEW ON GEOPOLYMERIZATION AND INFLUENTIAL FACTORS AFFECTING MECHANICAL PROPERTIES OF LATERITE SOILS STABILIZED WITH GEOPOLYMER

  Bui Van Duc, Nguyen Van Manh, Dao Phuc Lam

  58 - 72

  • PDF (Vietnamese)
• CONTROLLING THE SURFACE MORPHOLOGY FOR WATER COLLECTING FROM THE AIR

  Nguyen Thanh Binh, Do Thuy Chi, Nguyen Thuy Duong, Dao Quynh Mai, Hoang Huu Quy, Nguyen Thanh Vinh, Vu Thi Hong Hanh

  73 - 78

  • PDF (Vietnamese)
• MODELLING THE EFFECT OF POWER SYSTEM STABILIZER TO REDUCE POWER SWING IN TRANSMISSION SYSTEM INTEGRATED WITH RENEWABLE ENERGY

  Nguyen Quoc Minh, Nguyen Tien Thanh

  79 - 89

  • PDF (Vietnamese)
• FECAL SLUDGE MANAGEMENT IN THE NORTHWEST AREA OF HO CHI MINH CITY

  Huynh Tan Loi, Le Tri Nguyen, Nguyen Minh Hieu, Le Thi Kim Oanh

  90 - 99

  • PDF (Vietnamese)
• STUDY ON CHARACTERISTICS OF SOME BACTERIA STRAINS CAPABLE OF DECOMPOSING ORGANIC MATTER IN SALT WATER CONDITIONS ISOLATED FROM SPRATLY ISLANDS

  Nguyen Thi Tam Thu, Bui Thi Thu Ha, Pham Kien Cuong, Nguyen Thu Hoai

  100 - 108

  • PDF (Vietnamese)
• A STUDY ON THE INFLUENCE OF ENERGY PRICE ELASTICITY OF DEMAND ON OPTIMAL OPERATION OF ENERGY HUB

  Ha Thanh Tung, Pham Thi Hong Anh

  109 - 117

  • PDF (Vietnamese)
• DESIGN AND FABRICATE A PROTOTYPE SMART HELMET

  Do Huy Diep, Bui Thanh Phong, Nguyen Xuan Quynh, Tran Thanh Tung

  118 - 126

  • PDF (Vietnamese)
• FABRICATION, STUDY ON STRUCTURE OF GO AND ZrO2/GO DOPED Eu3+ NANOHYBRID BY HYDROTHERMAL METHOD

  Chu Manh Nhuong

  127 - 134

  • PDF (Vietnamese)
• REMOVAL OF METHYLENE BLUE BY ZrO2/GO DOPED Eu3+ NANOHYBRID MATERIALS

  Chu Manh Nhuong

  135 - 143

  • PDF (Vietnamese)
• DESIGN OF A MULTI-LAYERED ELECTRONIC SECURITY LOCK SYSTEM

  Trinh Thuy Ha*, Luong Quang Huy

  144 - 149

  • PDF (Vietnamese)
• STUDY THE AERODYNAMIC CHARACTERISTICS OF QUADROTOR’S PROPELLER

  Pham Van Khiem*, Nguyen Anh Tuan

  150 - 157

  • PDF (Vietnamese)
• FEASIBLITY OF ZnO/UV IN DEGRADATION OF METHYLENE BLUE AND CONGO RED

  Nguyen Trong Nghia, Nguyen Van Que, Nguyen Thi Nguyet, Nguyen Dinh Vinh

  158 - 165

  • PDF (Vietnamese)
• ARSENATE REMOVAL FROM WATER USING RICE STRAW-DERIVED-BIOCHAR: A STUDY AT LOW SOLUTION CONCENTRATIONS

  Phan Chi Tuong, Ho Thi Thanh Hien, Lam Truc Thanh, Ho Phung Ngoc Thao, Nguyen Thanh Binh, Ly Thi Ngoc Tram

  166 - 174

  • PDF (Vietnamese)
• RESEARCH, DESIGN AND MANUFACTURE A SIMULATION SYSTEM OF AK TRIGGER

  Le Thi Thu Thuy

  175 - 182

  • PDF (Vietnamese)
• TREATMENT OF TOTAL PHOSPHORUS IN WASTEWATER CONTAINS ORGANOPHOSPHORUS PESTICIDE BY MEMBRANE BIOREACTOR (MBR)

  Luu Tuan Duong, Le Thanh Son, Le Cao Khai, Truong Thi Minh Hang

  183 - 191

  • PDF (Vietnamese)
• STUDY ON THE TREATMENT OF DIRECT BLUE 86 IN WATER BY ELECTRO FENTON PROCESS

  Luu Tuan Duong*, Vu Van Tung

  192- 200

  • PDF (Vietnamese)
• EVALUATION ON THE POTENTIAL REMOVAL OF CATION AND ANION DYES USING CTS/PECTIN COMPOSITE

  Tran Nguyen Phuong Lan, Mai Thi Thu Suong, Huynh Quoc Khanh, Nguyen Thanh Ty, Ly Kim Phung, Nguyen Hong Nam

  201 - 212

  • PDF (Vietnamese)
• IMPACTS OF SAND EXCAVATION AND MINING TO ENVIRONMENT IN THANG LOI COMMUNE, VAN GIANG DISTRICT, HUNG YEN PROVINCE

  Duong Thi Huyen*, Tran Nguyen Bang, Bui Van Thanh

  213 - 220

  • PDF (Vietnamese)
• SYNTHESIS AND STUDY ON THE CHARACTERISTICS OF NANOMATERIALS BAMoO4 CO-DOPED Eu3+, Mn2+ BY HYDROTHERMAL METHOD

  Chu Manh Nhuong

  221 - 229

  • PDF (Vietnamese)
• OPTICAL AND LUMINESCENCE PROPERTIES OF NANO BaMoO4 CO-DOPED Eu3+, Mn2+ SYNTHESIZED BY HYDROTHERMAL METHOD

  Chu Manh Nhuong

  230 - 237

  • PDF (Vietnamese)
• ANALYZING CHEMICAL FRACTIONATION OF SILVER (Ag) AND ASSESSING THE POLLUTION RISK LEVEL IN SOILS IN A Pb/Zn MINING ZONE , IN THAI NGUYEN PROVINCE

  Vuong Truong Xuan

  238 - 246

  • PDF (Vietnamese)
• ANALYZING CHEMICAL FRACTIONATION OF STRONTIUM (Sr) IN SOILS AT THE Pb/Zn MINING AREA IN HICH VILLAGE, THAI NGUYEN PROVINCE

  Vuong Truong Xuan

  247 - 255

  • PDF (Vietnamese)
• RESEARCH AND IMPLEMENTATION OF H-INFINITY BALANCED TRUNCATION ALGORITHM FOR HIGH-ORDER UNSTABLE SYSTEMS

  Tran Duc Hoang*, Nguyen Thanh Tung, Doan Manh Cuong

  256 - 261

  • PDF (Vietnamese)
• EVALUATION OF VARIATION AND INFLUENCE OF SELECTED METEOROLOGICAL FACTORS ON PM2.5 CONCENTRATIONS IN A SUBURBAN SITE OF HANOI

  Pham Chau Thuy

  262 - 270

  • PDF (Vietnamese)
• THE ABILITY TO TREAT CYANIDE IN WASTE WATER BY H2O2 AND NaOCl

  Vu Thi Thuy Trang

  271 - 277

  • PDF (Vietnamese)
• RESEARCH AND ASSESSMENT OF TECHNICAL AND EMISSIONS OF GASONLINE-POWERED CARS WHEN SWITCHING TO ADAPTIVE FUELS

  Luong Quang Huy*, Tran Van Dung, Trinh Thuy Ha

  278 - 286

  • PDF (Vietnamese)
• OPTICAL CHARACTERIZATIONS OF CdS/ZnS AND CdS/ZnS/SiO2 NANOPARTICLES FOR LABELLING APPLICATIONS

  Chu Anh Tuan, Vu Thi Kim Lien, Vu Van Khai, Duong Thi Phuong Chi, Le Tien Ha, Chu Viet Ha

  287 - 295

  • PDF (Vietnamese)
• SYNTHESIS OF THERMOSENSITIVE COMPOSITE GEL CONTAINING NANOCOMPOSITE HYDROGEL APPLIED TO EXTINGUISH CLASS A FIRES

  Le Ha Giang, Duong Anh Thanh, Pham Thi Ha My, Pham Thi Thu Trang, Quan Thi Thu Trang, Nguyen Ha Thanh, Pham The Chinh, Nguyen Van Chien, Ngo Quoc Anh

  296 - 303

  • PDF (Vietnamese)
• OPTIMIZING INTERRUPTED AGING OF Al-Zn-Mg-Cu ALLOY: INCREASING STRENGTH, IMPROVING CORROSION RESISTANCE, REDUCING PEAK AGED TIME

  Nguyen Thi Van Thanh, Kim Xuan Loc

  304 - 311

  • PDF (Vietnamese)
• A STUDY ON THE LAW OF INCREASING PRESSURE OF THE INTERACTION PROCESS BETWEEN SHORT WAVES IN THE MIXTURE LIQUID - VAPOUR

  Nguyen Van Tuan, Le Xuan Long

  312 - 317

  • PDF (Vietnamese)
• UPGRADING A MOBILE ROBOT BASED ON PLATFORM P2DX OUTDATED

  Luu Trong Hieu, Duong Quoc Khanh, Ngo Minh Khoi, Nguyen Duong Linh, Nguyen Khac Nguyen

  318 - 325

  • PDF (Vietnamese)
• PREPARATION OF WS2 NANOSHEETS FOR LUBRICANT ADDITIVES

  Pham Minh Tan, Seng Ranika, Hoang Tien Dat, Nguyen Van Truong

  326 - 331

  • PDF (Vietnamese)
• FABRICATION, STUDY OF PROPERTIES OF SiO2 NANOMATERIALS AND APPLICATION IN MECHANICAL PROCESSING

  Pham Minh Tan*, Bui Thi Hien Uyen, Nguyen Van Truong, Hoang Tien Dat

  332 - 338

  • PDF (Vietnamese)
• EFFECT OF OXYGEN RATIO ON THE STRUCTURE, OPTICAL AND ELECTRICAL PROPERTIES OF NiO THIN FILMS

  Pham Viet Tung, Nguyen Dang Tuyen, Doan Quang Tri, Duong Thanh Tung, Nguyen Duy Cuong

  339 - 346

  • PDF (Vietnamese)
• INVESTIGATION ON POLLUTION STATUS OF DECABROMODIPHENYL ETHER AND DECABROMODIPHENYL ETHANE IN HANOI URBAN SETTLED DUST AND SEDIMENT SAMPLES

  Hoàng Quốc Anh, Nguyễn Thị Thu Thúy, Phạm Văn Tuân, Lê Thị Mai Anh, Phạm Thị Ngọc Mai, Phạm Đăng Minh, Trịnh Hải Minh

  347 - 354

  • PDF (Vietnamese)
• A SOCP-BASED FORMULATION FOR SHORT-TERM HYDROTHERMAL SCHEDULING OF AN IEEE 24-BUS SYSTEM CONSIDERING WATER-HEAD EFFECT

  Le Toan, Pham Nang Van, Trinh Van Hoang

  355 - 365

  • PDF (Vietnamese)
• STUDYING A METHOD TO DESIGN AN ANTENNA OPERATING AT DUAL-BAND FOR 5G APPLICATIONS BY COMBINING FRACTAL GEOMETRY AND METAMATERIALS

  Cao Thanh Nghia, Cai Thanh Tan, Hoang Van Thuc

  366 - 373

  • PDF (Vietnamese)
• A 2.15 GHz - 3.2 GHz DIFFERENTIAL MULTI-PASS RING OSCILLATOR ON 65 nm CMOS TECHNOLOGY

  Hoang Minh Thien*, Tran Viet Hung, Pham Viet Anh, Bui Quy Thang

  374 - 380

  • PDF (Vietnamese)
• RESEARCH AND DESIGN THE CONTROL SYSTEM FOR 2 DIESEL GENERATORS APPLIED IN THE FACTORY

  Nguyen Quang Nha

  381 - 388

  • PDF (Vietnamese)
• MIXED-INTEGER LINEAR PROGRAMMING-BASED TRANSMISSION NETWORK EXPANSION PLANNING CONSIDERING POWER LOSS

  Nguyen Tuan Anh, Dam Minh Quang, Pham Nang Van

  389 - 397

  • PDF (Vietnamese)
• ADHESION OF EPOXY PAINT AND POLYURETHANE PAINT BY THE PULL-OFF METHOD

  Do Dinh Trung

  404 - 410

  • PDF (Vietnamese)
• IMPROVED THE QUALITY OF THE TRANSMITTER INTERNAL CALIBRATION OF DIGITAL PHASED ARRAY ANTENNA SYSTEM

  Tran Viet Hung*, Bui Quy Thang, Hoang Minh Thien, Pham Viet Anh, Trinh Dinh Linh

  404 - 410

  • PDF (Vietnamese)
• DETERMINATION OF COEFFICIENT OF FRICTION DURING COLD RING UPSETTING PROCESS WITH DIFFERENT LUBRICANTS

  Nguyen Manh Tien

  411 - 419

  • PDF (Vietnamese)
• CHARACTERIZATION OF INDIGENOUS OIL-DEGRADING BACTERIA FROM OIL-POLLUTED SOIL IN CAM RANH, KHANH HOA

  Nguyen Thi Kim Thanh, Do Thi Tuyen, Nguyen Thi Thanh Loi, Ngo Cao Cuong, Phi Quyet Tien

  420 - 427

  • PDF
• CHARACTERISTICS, DISTRIBUTION, CORRELATION AND FORMATION TRENDS OF CHLOROBENZENS COMPOSITIONS IN INDUSTRIAL COMBINATION AND INDUSTRIAL PRODUCTION FURNACE

  Nguyen Thi Thu Thuy, Phi Thi Huong

  428 - 435

  • PDF (Vietnamese)
• RESEARCH AND SYNTHESIS OF CONDUCTIVE PPy/CNC POLYMER FOR FLEXIBLE ELECTRONICS APPLICATIONS

  Dao Duc Tung, Tran Duc Dong, Le Duc, Vu Thi Thao, Nguyen Ngoc An, Bui Dinh Tu

  436 - 442

  • PDF (Vietnamese)
• SIMULATION OF LOW VOLTAGE POWER SUPPLY SYSTEM FOR INDUSTRIAL FACTORY WITH MATLAB SOFTWARE

  Ha Thi Thinh*, Nguyen Thi Kha

  443 - 449

  • PDF (Vietnamese)
• ADAPTIVE SLIDING MODE CONTROL FOR THE LONGGITUDIAL OF FIXED- WING UAV

  Ngo Tri Nam Cuong

  450 - 456

  • PDF (Vietnamese)
• GREEN SYNTHESIS SILVER NANOPARTICLES USING SALIX SEMI-SOLID EXTRACT FOR PHOTOCATALYTIC EFFECT

  Ha Viet Truong, Tran Thanh Quynh, Do Thi Hue

  457 - 464

  • PDF (Vietnamese)
• REMOVAL OF PHOSPHATE 〖(PO〗_4^(3-)) FROM AQUEOUS SOLUTION USING MAGNETIC MATERIAL DERIVED FROM SNAIL SHELL

  Hoang Le Phuong *

  465 - 472

  • PDF (Vietnamese)
• REDUCE HARMONIC FOR PHOTOVOLTAIC INVERTERS BY SPWM CONTROL METHODS VIA SIMULATION AND EXPERIMENT ASSESSMENT OF PHOTOVOLTAIC SYSTEMS

  Trinh Trung Hieu, Nguyen Tho Hoang, Tran Ngoc Thien Nam, Van Trong Nhan, Duong Minh Quan

  473 - 481

  • PDF (Vietnamese)
• AN ASSESSMENT OF WATER QUALITY, CAPACITY OF POLLUTIONS, AND SOLUTIONS TO REDUCE POLLUTION OF URBAN RIVERS IN THAI BINH PROVINCE

  Nguyen Thi Thanh Hai, Nguyen Phuong Nhung, Le Tuan Vinh, Hoang Minh Thang, Nguyen Thi Ngoc anh, Nguyen Thi anh, Pham Hai Long, Vu Van Tu, Phan Quang Thang

  482 - 490

  • PDF (Vietnamese)
• A SELF-ADAPTIVE ITERATIVE ALGORITHM FOR SOLVING A CLASS OF BILEVEL SPLIT VARIATIONAL INEQUALITY PROBLEM IN HILBERT SPACES

  Chu Thi Ngan, Nguyen Tat Thang

  491 - 499

  • PDF (Vietnamese)