Dissipation Technique Research Articles

Influence of zwitterionic amphiphilic copolymers on heterogeneous gypsum formation: A promising approach for scaling resistance

This study aims to investigate the influence of zwitterionic amphiphilic copolymers (ZACs) in the nucleation and growth of heterogeneous CaSO4 at the zwitterion-water interface, which is crucial for the prevention of mineral scaling and consequent downtime or suboptimal performance in industries like membrane desalination, heat exchangers, and pipeline transportation. In situ grazing incidence small angle X-ray Scattering (GISAXS), and quartz crystal microbalance with dissipation (QCM-D) techniques were used to analyze the evolution of CaSO4 particles on two new ZAC coatings: poly-(trifluoroethyl methacrylate-random-sulfobetaine methacrylate) (PTFEMA-r-SBMA, or PT:SBMA) and poly(trifluoroethyl methacrylate-random-2-methacryloyloxyethyl phosphorylcholine) (PTFEMA-r-MPC, or PT:MPC). The results showed that PT:MPC coatings promoted nucleation but inhibited crystal growth, resulting in slower overall reaction kinetics on PT:MPC coatings compared to PT:SBMA coatings. Interfacial interactions involving the substrates, sulfate minerals, and ions were examined, revealing that calcium ion adsorption, primarily governed by electrostatic attraction, played a crucial role in the nucleation and growth processes on both ZAC coatings. The crystal characterization revealed a phase transition from bassanite to gypsum on both ZAC coatings, suggesting that these zwitterionic materials can influence the mineral phase of heterogeneously formed CaSO4 crystals. These findings enhance our understanding of the fundamental mechanisms underlying heterogeneous CaSO4 scaling in the presence of zwitterionic materials.

Analytical study on highway thermal runaway propagation and inter-electrode dynamics in lithium-ion battery applications: Insights into battery safety

It is essential to ensure thermal safety in lithium-ion (Li-ion) batteries to facilitate their increased use in electric cars, thereby enhancing the safety of individual batteries. When high-power Li-ion batteries are subjected to abusive conditions, they frequently experience thermal runaway (TR) due to a sequence of exothermic reactions resulting from electrode contacts. These events generate a significant amount of heat and have the potential to cause thermal runaway propagation (TRP) throughout the battery module. This paper presents an in-depth TRP analysis approach, combining thermo-kinetic and electrode interaction assessments at the cell level. The method is implemented on the TR properties of a cylindrical Li-ion cell equipped with nickel-rich and silicon-carbon electrodes. The developed TRP approach, incorporating various heat dissipation techniques, is applied to a prototype high-energy Li-ion chamber to evaluate TRP susceptibility under different conditions, including ambient temperature, cell spacing, initiating cell location, external heating power, and heat dissipation rates. Additionally, this research provides insights into the various TRP pathways, focusing on aspects such as the propagation rate, the exothermic processes’ thermal, required thermal energy input, and external heat release. The comprehensive model, considering both heat transfer and chemical interactions between electrodes under TR, can address accurate TR- propagation examinations for batteries. Moreover, it can be expanded to larger battery systems, ultimately improving overall battery safety.

Renewable energy integration for sustainable cold storage: Designing a solar PV operated thermoelectric cool chamber

Thermoelectric coolers utilizing peltier effect offer a promising solution for cooling applications. This study elaborates the design and optimization of a TEC-operated cool chamber and evaluation of developed thermoelectric cool chamber. A number of elements need to be carefully considered during the design process, including heat load assessment, TEC module selection and effective heat dissipation techniques. Appropriate TEC modules are chosen based on estimated cooling load, temperature difference achieved, power consumption, maximum cooling capacity of each TEC and heatsink. The solar photovoltaic operated thermoelectric cool chamber comprises essential components such as SPV Panel, solar charger controller, battery, PWM controller, TEC module with heat sink, and insulated box (TCC unit). The design considerations involve estimating total power consumption and determining the number and ratings of solar panels, batteries, and power conditioning devices to ensure reliable electricity supply. The system operates on SPV-generated power, utilizing MPPT charge controllers to maximize power output. Pulsed width modulation (PWM) systems efficiently regulate power distribution to thermoelectric modules, optimizing performance. The thermoelectric cool chamber was developed of 40 L water capacity. It was observed that, the chamber and water temperature in developed thermoelectric cool chamber was reduced from initial temperature by 11.85°C and 11.56°C, respectively after 24 hours. The chamber and water temperature after 24 hours were 13.31°C and 13.49°C, respectively. The performance evaluation showed that the chamber’s cooling efficiency was influenced by factors such as cooling load and water volume. This comprehensive approach enables the development of an effective and sustainable thermoelectric cooling system suitable for various applications.

Development of a Janus radiative cooler using a versatile fabrication process

Radiative cooling is a passive heat dissipation technique that emits thermal radiation to outer space through the atmosphere window. A radiative cooler has one side facing the sky, and the other side extracts heat from hot targets. Excellent cooling performance of a cooler can be archived via broadband absorption on one side and wavelength-selective emission on the other side like a Janus structure. However, Janus radiative coolers are usually constructed with complicated structures that take tremendous effort and costly facility. This work thus proposes an alternative Janus radiative cooler, which can be fabricated using a versatile and cost-effective fabrication technique, the electrophoretic deposition. The same setup and procedure can deposit chitosan and carbon black thin films on each side of a metallic substrate to achieve dual functionality. Five measurement units were constructed, and fabricated samples were placed on the top surface of each. The cooler successfully lowered the heater temperature inside the unit. Temperature reduction of 5.6 °C and 0.2 °C can be achieved respectively during daytime and nighttime with the proposed cooler compared to the case without thin film depositions. The repeatability of results was validated, and numerical modeling was conducted to exhibit thermal fields. The proposed cooler is promising in diminishing energy demand as well as carbon emissions while taking cost-effectiveness, feasibility, and simplicity into consideration.

Interfacial dynamic adsorption behaviour of the bovine alpha- Lactalbumin at the oil-water interface: Evaluating the role of glycyrrhizin

The contribution of glycyrrhizin (Gy) on the interfacial dynamic adsorption behaviour of the adsorbed layer formed by the bovine alpha-Lactalbumin (α-La) at the oil-water interface were investigated using the interfacial viscoelasticity and quartz crystal microbalance with dissipation (QCM-D) techniques. Compared to the individual α-La, Gy could decrease the interfacial tension, effectively enhancing their adsorption processing. The adsorption kinetic results revealed the diffusion rate of the α-La reduced at 0.5–2.0 mM Gy and its rate constant of rearrangement increased except for 2.0 mM. Also, Gy reduced the viscoelastic modulus including the elastic and viscous modulus of the adsorbed film formed by the α-La. Additionally, more adsorbed mass on the oil-water interface was observed in the α-La/Gy complex according to the QCM-D results, which can improve the stability at the oil-water interface. These results are expected to provide basic interfacial adsorption information for the film formed by multi-component.

Asphaltene Adsorption on Solid Surfaces Investigated Using Quartz Crystal Microbalance with Dissipation under Flow Conditions.

Asphaltenes can cause operational challenges in petroleum production facilities and adversely affect production by adsorption on mineral surfaces and alteration of the oil wettability of reservoirs. Therefore, understanding asphaltene adsorption mechanisms and their effects is crucial to improving the efficiency of oil production and reducing costs. In this study, we focus on understanding the impact of asphaltene concentration and the depositing environment of asphaltene adsorption on solid surfaces using the quartz crystal microbalance with dissipation (QCM-D) technique. The initial and long-term kinetics of adsorption at different concentrations were examined on three different solid surfaces including silicon dioxide to represent quartz mineral, stainless steel, and gold. The frequency-dissipation data showed evidence of monolayer adsorption initially, followed by multilayer formation. At short times, the adsorbed mass increased linearly with time, suggesting that the process was kinetically controlled rather than diffusion-controlled. The results were reproducible and did not depend on convection velocity but did depend on the surface material. At later stages, the monolayer development appeared to follow the random sequential adsorption (RSA) theory. Once multilayer adsorption commenced, the rates agreed well with the two-layer model of Zhu and Gu, 1990. The impact of asphaltene adsorption on the wettability of the surface was examined using contact angle studies, which showed decreasing water wettability with an increase in the adsorbed mass. The contact angle of water after 12 h of adsorption leveled off at around 100° on all three surfaces. Contact angle measurements were also used to evaluate if brine salinity causes the wettability alteration of surfaces with the adsorbed asphaltene. The results indicate that at 3% NaCl solution, the contact angle decreased only slightly by less than 2°.

Accelerated degradation of photovoltaic modules under a future warmer climate

AbstractSolar photovoltaic (PV) module deployment has surged globally as a part of the transition towards a decarbonized electricity sector. However, future climate change presents issues for module degradation due to prolonged exposure to outdoor conditions. Here, we identify key degradation mechanisms of monocrystalline‐silicon (mono‐Si) modules and empirically model their degradation modes under various climate scenarios. Modules tend to degrade faster due to the thermal degradation mechanism. We estimate that the weighted average degradation rate will increase up to 0.1%/year by 2059. On assessing the impacts of module degradation on future PV power generation and levelized cost of energy, we project up to 8.5% increase in power loss that leads to ~10% rise in future energy price. These results highlight the need to climate‐proof PV module design through careful material selection and improvements in the module manufacturing process. In particular, we recommend the use of heat dissipation techniques in modules to prevent degradation due to overheating.

Mechanism of improving the digestibility of coconut globulin by atmospheric cold plasma treatment: The perspective of protein structure

As a natural emulsifier in coconut milk, coconut globulin (CG) is a potential plant-based protein source to replace animal protein. However, due to its poor solubility and poor digestive properties, CG is not sufficiently utilized. The aim of this study was to improve the digestibility of CG by employing atmospheric cold plasma (ACP) technology. The influence of ACP treatment on the digestive properties of coconut globulin was evaluated by measurements of digestibility, degree of hydrolysis, free amino acids (FAAs), and polypeptide distribution after gastrointestinal digestion. These results implied that application of ACP treatment facilitated the digestion of CG, resulting in the hydrolysis of the compound into numerous smaller peptides (<1000 Da) and FAAs. The quartz crystal microbalance with dissipation technique was utilized to monitor the dynamic digestion process of CG. The results observed that ACP-treated CG had increased affinity for pepsin and trypsin, especially at 60 kV (the adsorbed mass was 7.60 μg/cm2). Various analytical techniques, including circular dichroism spectroscopy, Fourier transform infrared spectroscopy, fluorescence spectroscopy, and particle size distribution, demonstrated that ACP treatment facilitated the structural unfold of CG, resulting in increased exposure of enzyme binding sites and hydrolysis into smaller fragments. In addition, in vitro and cell-based antioxidant experiments provided evidence of the significant antioxidant activity of the hydrolysate derived from ACP-treated CG. Hence, the utilization of ACP treatment at 60 kV emerged as the optimal approach for enhancing the digestibility of CG (from 71.65% to 78.65%). This finding provides a theoretical basis for the use of ACP treatment in protein-rich foods, thereby providing insights for expanding the application of ACP treatment in the field of food processing.

High-quality fabrication of diamond straight microchannels heat sink with large aspect ratio microchannels using UV nanosecond laser based on multi-feed method

The high heat flux density of modern chips presents a major challenge to their development. Single-phase or two-phase flow heat dissipation techniques using high thermal conductivity materials are seen as a potential solution. However, creating microfluidic channels from ultra-high thermal conductivity diamond materials is a significant challenge. In this paper, we present an experimental study on the fabrication of diamond heat sinks with high aspect ratio microchannels using a UV-nanosecond laser processing system, along with two multi-feed processing techniques for the collecting grooves and microchannels. We used a 1 μm spacing grid path combined with a polished multi-feed process to fabricate a 1600 μm deep collecting groove with a smooth bottom morphology. We also proposed a multi-area multi-feed fabrication technique for microchannels with an aspect ratio of 8:1 and a depth of 1600 μm. Finally, we have successfully fabricated a diamond straight microchannels heat sink, featuring a high aspect ratio and low phase change damage.

The enhancement mechanisms of mucin and lactoferrin on α-amylase activity in saliva: Exploring the interactions using QCM-D and molecular docking

α-Amylase activity differs between individuals and is influenced by dietary behavior and salivary constituents, but limited information is available on the relationship between α-amylase activity and saliva components. This study investigated the impact of salivary proteins on α-amylase activity, their various correlations, the effect of mucin (MUC5B and MUC7) and lactoferrin on the enzymatic kinetics of α-amylase, and the mechanisms of these interactions using the quartz crystal microbalance with dissipation (QCM-D) technique and molecular docking. The results showed that α-amylase activity was significantly correlated with the concentrations of MUC5B (R2 = 0.42, p < 0.05), MUC7 (R2 = 0.35, p < 0.05), and lactoferrin (R2 = 0.35, p < 0.05). An in vitro study demonstrated that α-amylase activity could be significantly increased by mucins and lactoferrin by decreasing the Michaelis constant (Km) of α-amylase. Moreover, the results from the QCM-D and molecule docking suggested that mucin and lactoferrin could interact with α-amylase to form stable α-amylase-mucin and α-amylase-lactoferrin complexes through hydrophobic interactions, electrostatic interactions, Van der Waals forces, and hydrogen bonds. In conclusion, these findings indicated that the salivary α-amylase activity depended not only on the α-amylase content, but also could be enhanced by the interactions of mucin/lactoferrin with α-amylase.

Effect of wax chain length on the adhesion dynamics and interfacial rigidity of Salmonella Typhimurium LT2

The wax layer on the surface of fruits and vegetables is the first line of defense against a range of environmental stresses. The initial stage in the etiology of bacterial foodborne illnesses involves the bacterial adhesion and colonization on the wax layer of food commodities. Herein, we report a systematic study that provides new insights into dynamics of interfacial nanoscale processes associated with the transition of bacteria from a planktonic state to a sessile state at the early stages. To achieve this, we coated a piezoelectric sensor with model waxes containing linear alkyl carbon chains of varying lengths (from 6 to 18 carbons) via chemisorption. The process of bacterial adhesion to these wax-coated sensors was monitored using the Quartz Crystal Microbalance with Dissipation (QCM-D) technique, which offers nanogram-level gravimetric accuracy and millisecond time resolution. Our findings revealed that surfaces with higher hydrophobicity are more susceptible to Salmonella adhesion. Furthermore, we conduct a comparative analysis of the viscoelastic properties of the adhered layer, revealing distinct behaviors: Salmonella adhered to C6-wax exhibited solid-like characteristics, while adherence to C18-wax rendered a more liquid-like response. This observation underscores the role of interfacial energy in governing bacterial adhesion, as interpreted through the thermodynamic and surface science model, ultimately influencing rigidity. This investigation offers valuable insights into the initial adhesion to surfaces and has potential implications for surface design and modification within the food industry and other relevant applications, while also contributing to our understanding of bacterial contamination in food commodities.

Compact wave-trapping control with energy dissipation for one-dimensional continuous systems based on an extended wave filtering method

This paper presents compact wave-trapping control in conjunction with an energy dissipation technique for one-dimensional systems governed by the wave equation. First, the transfer matrix method for an acoustical duct is introduced to model the wave dynamics of the target system. Next, the active wave diode for the duct is presented, which is an extension of the conventional method for a cascaded lumped-parameter system. The extended wave filtering method is then introduced that enables the wave measurement in a wavefield where energy dissipation is applied via an external input. This is followed by formulation of the wave-trapping control system in conjunction with direct rate feedback based on the extended wave filter which is modified for this case. Finally, numerical simulations on the proposed method are conducted, which reveal that the proposed method simultaneously achieves the inactivation of acoustical modes and generation of a silent zone over a wide region, while the resonant phenomena in the wave-trapping region are suppressed by the direct rate feedback. Furthermore, it is also shown that the proposed control system is stable, and the stability is improved by the additional direct rate feedback.

Study on thermal aspects of lithium-ion battery packs with phase change material and air cooling system

During the operation of the lithium batteries, due to energy loss, the heat will be generated. Therefore, effective heat dissipation technique is required for operation of the lithium batteries under the safe temperature limit. To increase the safety, efficiency, and lifetime of these batteries, the thermal management is an important key factor. Nickel cobalt lithium manganate (NCM) batteries have high energy ratio and high voltage output. The thermal performance of phase change material (PCM) and air cooling system, as a combined cooling system, employed for single battery and battery packs is investigated in this study. NCM-21700 lithium-ion battery is considered for investigation. With boosting DR, the internal temperature of the battery is increased rapidly, and the temperature uniformity is decreased. The analysis of single cell equipped with the PCM showed that the PCM with δ = 12 mm is the best choice at DR = 3C. In addition, it was concluded that under the synergistic effect of air cooling and PCM, since the PCM continuously takes away the heat of the battery, and the air can remove the heat absorbed by the PCM with high rate, the performance of the battery can be improved. The final battery surface temperatures are 30.53°C, 29.97°C, 29.71°C, and 29.93°C for the PCM thicknesses of 5, 10, 12, and 15 mm, respectively. During the discharge process, the battery temperature under the synergistic effect of the air and the PCM increases gently and reaches to 30.6 °C. The PCM cannot fully control the battery temperature change at high discharge rates. The low thermal conduction in PCM leads to the inability to effectively transfer heat to the external surface of the PCM.

Interactions between monovalent cations and polyethylene glycol: A study at micro level

Understanding the intricate interplay between ions and polymers holds key implications for a myriad of fields, from biomedicine to materials science. Here, we present a comprehensive investigation of ion-specific effects on the behavior of single polyethylene glycol (PEG) chains, a versatile polymer widely used in various applications. Employing single-molecule force spectroscopy (SMFS) and quartz crystal microbalance with dissipation (QCM-D) techniques, we systematically explore the impact of different monovalent cations on structural and hydration dynamics of PEG, Surprisingly, our results demonstrate a non-linear ion-specific influence on the hydration of PEG chains. The introduction of ions significantly affects the binding water content and the single-chain elastic behavior of PEG. Intriguingly, monovalent cations display an intriguing concave relationship between their size and the extent of water binding. Li+ and Na+, characterized by their smaller size and higher charge density, induce pronounced hydration, thus altering the overall structural properties of PEG chains. In contrast, larger cations like Rb+ and Cs+ facilitate chain extension, while concurrently promoting the formation of binding water. Our findings offer a fresh perspective on the role of ion size and charge density in governing polymer-water interactions. Moreover, through quantitative analysis utilizing QCM data, we verify the intricate influence of ions on PEG chains. Our research contributes to unraveling the complex interplay between ions and polymers, highlighting the importance of ion-specific effects in shaping polymer behavior. While shedding light on the potential of polymer materials with tailored properties, it also underscores the need for further investigations into the mechanisms underlying ion-specific effects and their broader implications.

Analysis of Heat Dissipation of Lithium Battery Pack Based on Eddy Current Tube

In this study, numerical heat dissipation simulation is carried out using vortex tube heat dissipation technique for the heat dissipation problem of lithium batteries. First of all, the type of lithium battery, thermal runaway phenomenon, thermal runaway temperature range, and then the lithium battery group cooling methods and advantages and disadvantages of the exposition; followed by the working principle of eddy current tube, the application of the way, as well as the advantages and disadvantages of the exposition. Combined with the vortex tube's own structural characteristics, numerical simulation is used to apply the vortex tube cooling to lithium battery heat dissipation. This study provides new ideas and methods for the development of lithium battery heat dissipation technology, and has important reference value for solving the heat dissipation problems of lithium battery in practical applications.

A Review of Parameters and Mechanisms in Spray Cooling

Miniaturisation in avionics, electronics, and medical appliances has led to demands for rapid heat dissipation techniques. The spray cooling technique has gained importance recently due to its advantage over other cooling methods. Parameters affecting heat transfer mechanisms during spray cooling are contemplated. This review presents different heat transfer parameters and their effect on spray cooling by analysis from past studies. Heat transfer surface modifications and different coolant variations to enhance heat transfer effectiveness are also reviewed. Apart from high heat flux having more applications, low heat flux studies have also grabbed the researchers to find solutions with a temperature range lower than 250˚C. Therefore, the upcoming spray cooling technology will have broad applications that will contribute to the maximum efficiency of the heat removal rate.

Interfacial adsorption dynamics of solid lipid particles at oil/water interfaces through QCM-D technique

The interfacial adsorption dynamics of solid particles are important processes in the formation of Pickering emulsion, and its stabilities and functionalities are critically dependent on the particle interfacial structures. In this study, we investigated the interfacial behaviors of solid lipid particles (SLPs) within six food-grade SLPs using the quartz crystal microbalance with dissipation (QCM-D) technique. These SLPs had been subjected to surface modification with varying emulsifier contents, specifically 1, 2, and 4 wt% of both Polysorbate 40 (T40) and sodium caseinate (Na-Cas), referred to as T40-SLPs and Na-Cas-SLPs. Two distinct interface behaviors have been identified: Type 1, characterized by with weak interfacial activity, which included the 1 and 2 wt% T40-SLPs, and Type 2, exhibiting stronger interfacial activity, encompassing the 4 wt% T40-SLPs as well as the 1, 2 and 4 wt% Na-Cas-SLPs. Subsequently, the mechanism through which the emulsifiers influenced the interfacial dynamic behaviors was established by correlating the interfacial behaviors with the properties of SLPs. Briefly, larger and more electronegative spherical Na-Cas-SLPs exhibited stronger interfacial activity, which facilitated the formation of smaller and more stable Pickering droplets. The interfacial films formed by the short plate-like T40-SLPs were not sufficiently consolidated, which led to instability of the hydrophobic interfaces. These results were confirmed with macrostability tests of the Pickering emulsions stabilized by the SLPs and are expected to provide basic information for the functionalization of multicomponent Pickering emulsions.

Multi-objective optimization of fractal-tree microchannels in a rectangular heat sink by a distributed-adaptive genetic algorithm

Recently, an innovative heat dissipation technique of fractal-tree structures has attracted attention due to its excellent high heat transfer efficiency and low pumping power. Though the impact of geometrical parameters such as branching level and dimension ratios of successive branches on the heat transfer efficiency and pumping power are considered to be critical, the impact mechanisms are still not well studied and formulated. Hence, there is still no clear method to optimally arrange the fractal-tree microchannels (FTMCs) in a rectangular heat sink to achieve better thermal and hydraulic performance. Therefore, we developed a multi-objective optimization algorithm (distributed-adaptive genetic algorithm, DAGA) to optimize the different types of novel FTMCs concerning achieving an optimal COP (coefficient of performance, heat transfer/ pumping power). The developed DAGA can improve the computational efficiency and the quality of optimum by around 87.63% and 12.48%, respectively in the present work. Then, taking conventional rectangular parallel microchannels (RPMCs) as a reference, the COP of the optimized FTMCs in the same heat sink shows an enhancement of around 0.09 ∼ 0.57. The highest COP is achieved by the three-level branching FTMC. Furthermore, the optimized results reveal that branching level, bifurcation number, and microchannel width at the first branching level are sensible, while dimension ratio factors and microchannel length at the first branching level show low sensibility to the COP of FTMCs.

News of Death In Jumlah Fi‘liyyah In Obituarial Rubric Of Al-Ahrām Newspaper December 2017 – March 2018 Edition: Semantic Analysis

This study discusses news of death in the jumlah fi‘liyyah in the obituary rubric of Al-Ahrām (SKA) newspaper with the euphemisms contained there in. This study aims to reveal the fi'l form used and the choice of words or euphemisms in obituaries jumlah fi‘liyyah numbers in the opening sentences of the SKA obituary rubric, December 2017 – March 2018 edition. The theory used in this research is semantic. The data of this research is in the form of obituaries in jumlah fi‘liyyah in the opening sentence of the SKA obituary rubric advertisement. The method used in providing data is the listening method, with basic tapping and orthographic note-taking techniques as advanced techniques. At the data analysis stage, the method used is the distribution method with basic techniques for natural elements and advanced courses in the form of dissipation techniques and replacement techniques. As for the data presentation stage, the informal presentation method is used.&#x0D; Based on research conducted on obituaries in jumlah fi‘liyyah in the opening sentence of the SKA obituary rubric advertisement, eight variations of obituaries used based on the fi'l were found. The eight obituaries in jumlah fi‘liyyah are divided into three categories of fi'l forms, namely fi'l mujarrad ma'lūm, fi'l mazīd ma'lūm, and fi'l mazīd majhūl. The eight fi'ls in these three forms are euphemisms to replace /māta/ in BA. Thus, it is known that the perspective of the Arab nation in symbolizing someone's death with the choice of subtle words in the form of certain fi'l and visible religious symbols through the terms used.

KONSTRUKSI FRASA ADJEKTIVAL DALAM MAJALAH TEMPO 2022: “DARI UTARA MEMBELA KAUM HAWA”

The purpose of this research is to (1) describe the types of adjective phrases, (2) describe the categories of attribute filling words in adjectival phrases, and (3) describe the syntactic function of adjektival phrases in the Special Report of Tempo Magazine, Sunday, December 25, 2022, entitled “Dari Utara Membela Kaum Hawa”. The research approach used is a qualitative descriptive and syntactic approach. The method of collecting data is through the listening method with advanced techniques, free engagement-free viewing, and note-taking techniques. Meanwhile, the data analysis method used is the Direct Element Division method with advanced techniques in the form of dissipation techniques, expansion techniques, and reverse techniques. The results of data analysis are presented through an informal presentation method. The results showed that 35 data of adjective phrases were divided into 17 endocentric adjective phrases and 18 exocentric adjective phrases. The types of adjective phrases found based on the number of cores consist of (1) attributive endocentric adjective phrases and (2) coordinative endocentric adjective phrases. The categories of filler words in adjective phrases are divided into (1) verbs, (2) adverbs, (3) nouns, and (4) pronouns. The adjective phrases found occupy several syntactic functions, namely (1) subject, (2) predicate, (3) object, (4) complement, and (5) adverb.