Publikasi Prof. Dr. Timbangen Sembiring, M.sc. | Fakultas Matematika Dan Ilmu Pengetahuan Alam Universitas Sumatera Utara

Synthesis and Characterization of Magnetic Fe3O4/TEOS/TiO2 Composites for Methylene Blue Photodegradation

RIDWAN YUSUF LUBIS , KERISTA SEBAYANG , EDDY MARLIANTO , RENALDO SIMANJUNTAK , MONIKA KLARIZCA SARAGIH , TIMBANGEN SEMBIRING , HARIYATI LUBIS , MORAIDA HASANAH

Fe3O4/SiO2 composite derived from rice husk ash to enhance methylene blue removal efficiency in wastewater treatment

JEDDAH YANTI , HARIYATI LUBIS , SUSILAWATI , TIMBANGEN SEMBIRING

Synthesis and characterization of Magnetic Fe3O4/SiO2 composite for Environmental Sanitation

Budhy Kurniawan R. , TIMBANGEN SEMBIRING , RIDWAN YUSUF LUBIS , ZIKRI NOER , HARIYATI LUBIS

Characterization of morphological structures of Fe3O4/SiO2/ZnO composite

Budhy Kurniawan R. , SUSILAWATI , TIMBANGEN SEMBIRING , HARIYATI LUBIS

Analysis and Efficiency of Dye Cabbage On Tio2 Semiconductors With a Method of Spin Coating as a Material Solar Cell

ABDUL RAIS , TIMBANGEN SEMBIRING

The Optimization of Silica-Based Composite Membrane from Volcanic Ash of Mount Sinabung, Titanium Dioxide, and Polyvinyl Alcohol for River Water Treatment through Photocatalyst Process

SYAHRUL HUMAIDI , TIMBANGEN SEMBIRING , ZURIAH SITORUS

Extraction and Characterization of Silicon Dioxide from Volcanic Ash of Mount Sinabung, Indonesia: A Preliminary Study

ZURIAH SITORUS , TIMBANGEN SEMBIRING , SYAHRUL HUMAIDI

Synthesis and characterization of Fe3O4/SiO2/TiO2 using coprecipitation method

HARIYATI LUBIS , TIMBANGEN SEMBIRING , RIDWAN YUSUF LUBIS , KERISTA SEBAYANG , EDDY MARLIANTO

Extraction and Characterization of Silicon Dioxide from Volcanic Ash of Mount Sinabung, Indonesia: A Preliminary Study

FYNNISA. Z , MORAIDA HASANAH , TIMBANGEN SEMBIRING , ZURIAH SITORUS , SYAHRUL HUMAIDI , RAHMADSYAH , MORAIDA HASANAH

Extraction Of Silica Dioxide (SiO2) From Mount Sinabung Volcanic Ash with Coprecipitation Method

TIMBANGEN SEMBIRING , SYAHRUL HUMAIDI , KERISTA SEBAYANG

Effect of variations in Composition and Sintering Temprature on Mechanical Properties Ceramic Membrane with Bentonite, Sinabung Volcanic Ash and Carbon Active

FYNNISA. Z , MORAIDA HASANAH , TIMBANGEN SEMBIRING , SYAHRUL HUMAIDI , RAHMADSYAH , MORAIDA HASANAH

Characterization of indicator electrodes using the potentiometric biosensor method as urea sensor with XRD, SEM-EDS, UV-Vis and FTIR

SATRIA MIHARDI , ABD HAKIM S , TIMBANGEN SEMBIRING , MANIHAR SITUMORANG

Review - A Pollutant Gas Sensor Based on Fe<inf>3</inf>O<inf>4</inf>Nanostructures: A Review

TIMBANGEN SEMBIRING

Application of silica-coated magnetite on a steel plate and its frictional and thermal effect

TIMBANGEN SEMBIRING

Effects of the calcination atmosphere and pre-heating treatment on the characteristics of sodium titanate nanorods synthesized from titanium tetraisopropoxide-sodium chloride precursors assisted by organic templates

NASRUDDIN MN , KERISTA SEBAYANG , ZIKRI NOER , TIMBANGEN SEMBIRING

Time Frequency Signal Classification Using Continuous Wavelet Transformation

TIMBANGEN SEMBIRING

Analysis of crystal structure and magnetic character strontium ferrite (SrFe<inf>12</inf>O<inf>19</inf>) powder made of stoichiometry and non-stoichiometry compositions

TIMBANGEN SEMBIRING

Study of physical and magnetic properties of barium hexaferrite substituted by Nd<inf>2</inf>O<inf>3</inf>

TIMBANGEN SEMBIRING

The effect of the calcination atmosphere in the formation of mineral sodium titanate

TIMBANGEN SEMBIRING

The effect of Mg, Na, and Ce addition on the superconducting properties of Bi<inf>1.6</inf>Pb<inf>0.4</inf>Sr<inf>2</inf>Ca<inf>2-x</inf>M<inf>x</inf>Cu<inf>3</inf>O<inf>y</inf> prepared sol-gel method

TIMBANGEN SEMBIRING

The Effect of The Calcination Atmosphere in The Formation of Mineral Sodium Titanate

ZIKRI NOER , TIMBANGEN SEMBIRING

The effect of tetraethyl orthosilicate (TEOS) additions as silica precursors on the magnetite nano-particles (Fe<inf>3</inf>O<inf>4</inf>) properties for the application of ferro-lubricant

TIMBANGEN SEMBIRING

Characterization Membrane Composition of PVA-Enzyme Coating PVC-KTpClPB As Urea Sensor with UV-VIS, SEM-EDX and XRD

TIMBANGEN SEMBIRING

A study of the use of palm fiber and palm shell as a thermal neutron radiation shielding material

TIMBANGEN SEMBIRING

Synthesis and characterization of Ba-Ferrite with variation of Nd<inf>2</inf>O<inf>3</inf> additive by powder metallurgy method

TIMBANGEN SEMBIRING

Characterization of membrane PVA-enzyme coated PVC-KTpCLPB as urea sensor with potentiometric method

TIMBANGEN SEMBIRING

Effect of calcination temperature on Microstructures, magnetic properties, and microwave absorption on BaFe <inf>11.6</inf> Mg <inf>0.2</inf> Al <inf>0.2</inf> O <inf>19</inf> synthesized from natural iron sand

TIMBANGEN SEMBIRING

Study and characterization of composite based on sugar palm stem powder reinforced by matrix polyester resin, epoxy resin and polyurethane resin

TIMBANGEN SEMBIRING

Fabrication and characterization of palm sugar tree (Arenga pinnata) fiber composites reinforced by polyester resin

TIMBANGEN SEMBIRING

Analysis of Composition; Topography of Volcanic Materials Erupted from Mount Sinabung, Karo Regency, Indonesia

TIMBANGEN SEMBIRING

Determination of Half Value Layer (HVL) Value on X-Rays Radiography with using Aluminum, Copper and Lead (Al, Cu, and Sn) Attenuators

TIMBANGEN SEMBIRING

Characterization of Biocomposite Materials based on the Durian Fiber (Durio Zibethinus Murr) Reinforced using Polyester Resin

TIMBANGEN SEMBIRING

Synthesis of Urea Sensors using Potentiometric Methods with Modification of Electrode Membranes Indicators of ISE from PVA-Enzymes Coating PVC-KT <inf>p</inf> ClPB

TIMBANGEN SEMBIRING

Characterization of Physical and Electrical Properties of Bi <inf>1.8</inf> Pb <inf>0.4</inf> Sr <inf>2</inf> Ca <inf>2-x</inf> M <inf>x</inf> Cu <inf>3</inf> O <inf>y</inf> (M = Na, Mg, Ce) Superconductor

TIMBANGEN SEMBIRING

The analysis of palm fiber and palm fiber-b4c potential as a shielding for thermal neutron radiation

TIMBANGEN SEMBIRING

Microstructure and magnetic properties of BaFe12-2xMgxAlxO19 for microwave absorbing materials

TIMBANGEN SEMBIRING

Using alumina and volcanic ash in producing catalytic converter ceramics

TIMBANGEN SEMBIRING

Microstructure and magnetic properties of BaFe<inf>12-2x</inf>Mg<inf>x</inf>Al<inf>x</inf>O<inf>19</inf> for microwave absorbing materials

TIMBANGEN SEMBIRING

Geophysical Study for Discovering The Missing of Lau Ketuken from The Surface at Sulkam Village

RITA JULIANI , TIMBANGEN SEMBIRING , MOTLAN

Secondary ordering in Pt-rich Pt-Mn binary alloys and CuMnPt<inf>6</inf> ternary alloy

TIMBANGEN SEMBIRING

Magnetic structures and spin-glass-like behavior in ordered and disordered Pt-rich Pt-Mn alloys

TIMBANGEN SEMBIRING

A Partial Phase Diagram of Pt-Rich Pt-Mn Alloys

TIMBANGEN SEMBIRING

ABC<inf>6</inf> Type Ordered Structure in Pt-rich Pt-Mn Alloys

TIMBANGEN SEMBIRING

Anisotropy and dimensional crossover of the vortex state in Bi2Sr2CaCu2O8 crystals

TIMBANGEN SEMBIRING

Evaluation of Co0. 7Ni0. 3Fe2O4 nano-particle on structural, morphological, and magnetic properties as a heavy metal adsorbent in Cu, Cr

TIMBANGEN SEMBIRING