bluuebunny/crossref_metadata_2025 huggingface dataset:
Leveraging historic streamflow and weather data with deep learning for enhanced streamflow predictions
Authors: Schutte Christiaan , van der Laan Michael , van der Merwe Barend
Published: February 2024

Streamflow information is crucial for effectively managing water resources. The declining number of active gauging stations in many rivers is a global concern, necessitating the need for reliable streamflow estimates. Deep learning techniques offer potential solutions, but their application in southern Africa remains largely underexplored. To fill this gap, this study evaluated the predictive performance of gated recurrent unit (GRU) and long short-term memory (LSTM) networks using two headwater catchments of the Steelpoort River, South Africa, as case studies. The model inputs included rainfall, maximum, and minimum temperature, as well as past streamflow, which was utilized in an autoregressive sense. The inclusion of streamflow in this way allowed for the incorporation of simulated streamflow values into the look-back window for predicting the streamflow of the testing set. Two modifications were required to the GRU and LSTM architectures to ensure physically consistent predictions, including a change in the activation function of the GRU/LSTM cells in the final hidden layer, and a non-negative constraint that was used in the dense layer. Models trained using commercial weather station data produced reliable streamflow estimates, while moderately accurate predictions were obtained using freely available gridded weather data.
Green synthesis of zinc oxide nanoparticles from Salvadora persica leaf extract: Characterization and studying methyl orange removal by adsorption
Authors: Al Rahbi Amal S. , Al Mawali Ahlam H. , Al Rawahi Shahad S. , Al Dighishi Rima K. , Al Abri Fatma A. , Ahmed Anwar , Rahman Sadik
Published: February 2024

The present study conducted a successful green synthesis of zinc oxide nanoparticles (ZnO NPs) from the aqueous solution of Salvadora persica leaf extract as capping agent and used for methyl orange dye removal. The morphology, chemical composition, crystallinity, optical property and isothermal behavior of synthesized nanoparticles were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDX), Fourier transform infra-red (FTIR), X-ray diffraction (XRD), and UV-visible spectroscopy (UV-Vis). The influencing factors on MO removal such as preparation method, dose, pH, contact time, and dye concentration were examined. The UV-Vis absorption band was found at 365 nm and the XRD analysis confirmed the crystallinity of the ZnO NP and the particle sizes were in the range of 32-68 nm. The FTIR bands confirm the presence of bioactive compounds. SEM images showed the formation of hexagonal and rod-shaped nanoparticles. The results revealed that a maximum methyl orange removal of 68% was obtained with an amount of 0.05 g of ZnO NPs at pH 5. The adsorption process can be well explained by the Langmuir isotherm model. This research demonstrates a green method of preparing various ZnO nanoparticle with a remarkable efficiency towards the removal of methyl orange dye.
Start-up of biofilter for nitrification and effect of filtration rate on the ammonium removal efficiency in drinking water treatment on pilot plant
Authors: Dragić Dajana , Drljača Dijana , Zorić Slobodanka
Published: February 2024

Biological filtration is a process that can be used for ammonium removal from water. The removal of ammonium is based on the nitrification process. Nitrification depends on many factors, such as water quality and filtration process parameters. To investigate the influence of filtration rate on the nitrification efficiency, nitrifying biofilters were formed at the pilot plant in the industry for drinking water production from surface water. The new biological filters were started under optimal conditions for biofilm formation. After the biofilm formation, the influence of the filtration rate on nitrification was examined over 3 months (from November to January). The time required for the spontaneous growth of nitrifying bacteria on the new filters was around 70 days. The operating conditions at the start-up period were the continuous flow of water containing γ(NH4+) ≈ 1mg/L, dissolved oxygen in a concentration >9 mg/L, filtration rate <1 m/h, inlet water temperature >12 °C and pH from 7.8 to 8. After the complete formation of the nitrifying biofilm, the percentage of NH4+ removal was greater than 95% for all tested filtration rates, from 0.5 to 8.4 m/h, at γ(NH4+) from 1 to 2.5 mg/L and raw water temperature from 13 to 7°C.
Evaluating water quality and fouling propensity in a pilot-scale ceramic membrane bioreactor treating municipal wastewater subjected to increasing salinity levels
Authors: Elmoutez Salaheddine , Ayyoub Hafida , Necibi Mohamed Chaker , Taky Mohamed
Published: February 2024

This study aims to optimize the removal of carbon and nitrogen pollutants from saline municipal wastewater using both membrane-based and biological treatment methods. It examines a pilot-scale sequential aerobic ceramic membrane bioreactor (AeCMBR) under various salinity levels (0–20 g NaCl/L) to assess biological processes and fouling behavior. While high COD removal rates of (≈90%) were consistently achieved, ammoniacal nitrogen removal dropped from 82 to 55% at 15 g NaCl/L, despite increased oxygenation flow rates. Notably, the biomass quickly adapted to salinity changes. Indicators such as mixed liquor suspended solids (MLSS), mixed liquor suspended volatiles (MLVSS), MLVSS/MLSS ratio, and sludge volume index (SVI) showed no significant correlation with increasing salt concentrations. Soluble microbial product (SMP) production was also unaffected by rising salinity levels. The transmembrane pressure (TMP) fluctuated, with the most pronounced trend at 15 g NaCl/L, even after reducing the flux from 20 to 15 L/m2/h. The primary fouling mechanism observed was reversible cake deposition. Overall, this research enhances our understanding of short-term operational impacts on AeCMBR performance as a function of different salinity levels.
Recent Patterns and Assessment of Long-term Complications followi ng
SARS-CoV-2 Infection and Vaccination in the Context of Diabet es
Prevalence among Blood Donors
Authors: Alqahtani Turki Mohammed M. , Ali Alghamdi Mohammed Abdullah , Rafi Baig Mirza , Al-Abbasi Fahad A. , Sheikh Ryan Adnan , Almalki Naif A. R. , Hejazi Moayad Mustafa , Alhayyani Sultan , Asar Turky Omar , Kumar Vikas , Anwar Firoz
Published: February 2024

Background:

Much increasing evidence has suggested that long-term complications
post vaccination of SARS-CoV-2 experience a wide range of complication including diabetes.
The risk and burden of type 1 diabetes is extensively reported, but type 2 diabetes mellitus (T2D)
has yet to be characterized. To address this gap, we aimed to examine trends of long-term complications
post SARS-CoV-2 infection and vaccination in diabetes incidence among the Saudi
population.

Methods:

In this cross-sectional hospital-based study, we analyzed the blood profile of first-time
blood donors from the University Hospital of King Abdulaziz University, Jeddah. Saudi Arabia.
Various blood parameters, HbA1c was measured in the month of May 2023. All the donors were
non-diabetic and were never diagnosed with T2D before the current blood donation. 203 healthy
subjects donated their blood, out of which 104 had abnormally high HbA1c tending towards diagnosis
of T2D and 99 had with blood profiles. The study followed the STROBE reporting guidelines.

Results:

Out of 203 donors 104 (male 50(48.1%), female 54(51.9%)) were diagnosed with increased
HbA1c (8.24 in males) compared to 7.61 of HbA1c in females. 35.6% were above ˃65
years, with 52.9% with O+ from the ABO blood group. Liver functions indicated significant
p˂0.05, 0.04, increased amount of GGT (46.47 U/L), Alkaline phosphatase (99.93 ±64.26 uL)
respectively in HbA1c elevated donors KFT represented significant p˂0.05, 0.02 elevated levels
of urea (6.73 ±5.51 mmol/L), creatinine (129.97 ±195.17 umol/L) respectively along with elevated
values of Lactate dehydrogenase (LDH) (263.72± 196.70 uL) and triglycerides (1.66
±0.74mmol/L) when compared to normal value of HbA1c donors.

Discussion:

In the present cross-sectional study, significant increase in HbA1c, trending towards
increased cases of T2D post SARS-CoV-2 infection and vaccination. Males are much affected
compared to females. Further maximum number of cases were from donors above the age of 65
years with altered partial LFT (GGT, Alkaline phosphatase), KFT (urea, creatinine), lipid profile
(TG) and LDH in post SARS-CoV-2 and vaccination blood donors.

Conclusion:

Increase in HbA1c in 50% of donors, irrespective of gender, is an alarming figure
for health authorities, with altered LFT, KFT and LDH tests and, in the near future, may increase
the incidence of T2D. Large-scale population-based studies are required to prevent future incidences
of T2D in young children who will be vaccinated.
The Natural Products as Novel Anti-obesity Agents: Mechanisms Based on Adipose Tissue
Authors: Cao Lei , Wu Chunwei , Liu Miao , Zhang Wenlong , Chen Hailong , Wang Ruolin , He Ze
Published: February 2024

Obesity presently stands as a formidable global public health concern, exerting a profound
impact on human life and well-being. Despite the plethora of pharmacological interventions
targeting obesity, their extensive use in clinical settings is hindered by the emergence of
numerous adverse reactions during drug interventions. Naturally occurring compounds or extracts
found in traditional Chinese medicine, fruits, and vegetables, possessing various attributes,
such as metabolic modulation, thermogenic induction, appetite alteration, and inhibition of lipase
activity and fat synthesis, have positioned themselves as potential anti-obesity pharmaceutical
candidates. Promoting thermogenesis through the browning of adipose tissue, reducing fat tissue
generation and ectopic deposition, along with the regulation of adipose factors, has emerged as a
primary focus in the treatment of obesity. This shift underscores the pivotal role of adipose tissue
as a critical target in obesity management. This study delves into various approaches based on
adipose tissue, providing an overview of the efficacy of bioactive components derived from medicinal
plants and fruits for treating obesity through adipose tissue modulation. Insights are
drawn from both animal experiments and clinical applications, with a discussion of potential
mechanisms underlying these effects. In conclusion, we have determined that natural compounds
are significant candidates for the treatment of obesity, and adipose tissue represents a crucial target
in the therapeutic process. We hope that our research will contribute novel perspectives for
the development of future pharmaceuticals and dietary supplements, as well as provide innovative
directions for clinical trials in the field.
Gd-EOB-DTPA-enhanced MRI Image Characteristics and Radiomics
Characteristics Combined with Machine Learning for Assessment of Functional
Liver Reserve
Authors: Zhu Xin-Yu , Zhang Yu-Rou , Guo Li
Published: February 2024

Objective:

To investigate the feasibility of image characteristics and radiomics combined with machine learning based on Gd-EOB-DTPA-enhanced MRI for
functional liver reserve assessment in cirrhotic patients.

Materials and Methods:

123 patients with cirrhosis were retrospectively analyzed; all our patients underwent pre-contrast MRI, triphasic (arterial phase, venous phase,
equilibrium phase) Gd-EOB-DTPA dynamic enhancement and hepatobiliary phase (20 minutes delayed). The relative enhancement (RE) of the
patient's liver, the liver-spleen signal ratio in the hepatobiliary phase (SI liver/ spleen), the liver-vertical muscle signal ratio in the hepatobiliary
phase (SI liver/ muscle), the bile duct signal intensity contrast ratio (SIR), and the radiomics features were evaluated. The support vector machine
(SVM) was used as the core of machine learning to construct the liver function classification model using image and radiomics characteristics,
respectively.

Results:

The area under the curve was the largest in SIR to identify Child-Pugh group A versus Child-Pugh group B+C in the image characteristics, AUC =
0.740, and Perc. 10% to identify Child-Pugh group A versus Child-Pugh group B+C in the radiomics characteristics, AUC = 0.9337. The efficacy
of the SVM model constructed using radiomics characteristics was better, with an area under the curve of 0.918, a sensitivity of 95.45%, a
specificity of 80.00%, and an accuracy of 89.19%.

Conclusion:

The image and radiomics characteristics based on Gd-EOB-DTPA-enhanced MRI can reflect liver function, and the model constructed based on
radiomics characteristics combined with machine learning methods can better assess functional liver reserve.
Effect of Breath Training on Image Quality of Chest Magnetic Resonance Freebreathing
Sequence
Authors: Jiang Yehai , Pu Doudou , Dang Shan , Yu Nan
Published: February 2024

Background:

Magnetic Resonance Imaging (MRI) plays a role in demonstrating substantial utility in lung lesion imaging, detection, diagnosis, and evaluation.
Previous studies have found that free-breathing star VIBE sequences not only have high image quality but also have a high ability to detect and
display nodules. However, in our routine clinical practice, we have encountered suboptimal image quality in the free-breathing sequences of certain
patients.

Objective:

This study aims to assess the impact of breath training on the quality of chest magnetic resonance imaging (MRI) obtained during free-breathing
sequences.

Methods:

A total of 68 patients with lung lesions, such as nodules or masses detected via CT examination, were prospectively gathered. They were then
randomly divided into two groups: an observation group and a control group. Standard preparation was performed for all patients in both groups
before the examination. The observation group underwent 30 minutes of breath training prior to the MRI examination additionally, followed by the
acquisition of MRI free-breathing sequence images. The signal intensity (SI) and standard deviation (SD) of the lesion and adjacent normal lung
tissue were measured, and the image signal-to-noise ratio (SNR) and contrast signal-to-noise ratio (CNR) of the lesion were calculated for
objective image quality evaluation. The subjective image quality of the two groups of images was also evaluated using a 5-point method.

Results:

MRI examinations were completed in both groups. Significantly better subjective image quality (edge and internal structure clarity, vascular
clarity, breathing and cardiac artifacts, and overall image quality) was achieved in the observation group compared to the control group (P<0.05).
In addition, higher SNR and CNR values for disease lesions were observed in the observation group compared to the control group (t=4.35,
P<0.05; t=5.35, P<0.05).

Conclusion:

It is concluded that the image quality of free-breathing sequences MRI can be improved through breath training before examination.
Extraction Optimization, Structure Analysis and Antioxidant Activity of
Polysaccharide from Sanghuangporus baumii
Authors: Qu Yunhe , Zhang Pingping , Cui Jing , Ni Xiuzhen , Song Kai , Shi Dongfang
Published: February 2024

Introduction:

In this study, we optimized the extraction process, analyzed the structure
and assessed the antioxidant activity of Sanghuangporus baumii polysaccharide (SBP). The present
results provide important information for the Sanghuangporus baumii polysaccharides in potential
natural antioxidant effects.

Background:

The extraction and structural analysis of polysaccharides from Sanghuangporus has
gained significant attention in the fields of chemistry, medicine, and life sciences. There is great
significance in maximizing the extraction of polysaccharides from Sanghuangporus and developing
their potential products in a scientific and rational manner.

Objective:

The study was designed to establish an efficient and practical extraction process for SBP,
and then investigated the structure and the antioxidant activity.

Methods:

The Response Surface Methodology (RSM) based on Box-Behnken design was used to
explore the ultrasound-assisted extraction of SBP, and the structure of SBP was studied by ultraviolet
spectroscopy, infrared spectroscopy and other instrumental analysis methods. The total antioxidant
capacity of SBP was studied by the Ferric Reducing Ability of Plasma (FRAP) method, and the
scavenging capacity of ABTS+·, DPPH· and OH· was carried out as the index to investigate its antioxidant
activity in vitro.

Results:

The statistical analysis results showed that the optimal conditions for extracting SBP were
an ultrasound time of 20.74 min, ultrasound power of 268.40 W and material-liquid ratio of 1:25.71.
Under optimal conditions, the experimental yield of SBP was 3.36 ± 0.01%. The RSM optimization
process was applied to the experiment of complex enzyme extraction of SBP, and the yield increased
to 4.72 ± 0.03%. Structural analysis showed that SBP mainly consisted of glucose, a small amount of
mannose and galactose, and the molecular weight distribution was uneven, mainly concentrating in
the three parts of 24.5,6.4,2.5 kDa. Moreover, SBP exhibited dose-dependent and strong reducing
power and radical scavenging activity. For DPPH·, ABTS+· and OH· radical scavenging assays, IC50
values were 1.505 ± 0.050 mg/ml, 0.065 ± 0.036 mg/ml and 0.442 ± 0.007 mg/ml, respectively.

Conclusion:

In the present study, a β-linked heteroglucan (SBP) was extracted using the optimized
process combining enzymes from the fruiting bodies of Sanghuangporus baumii. SBP exhibited
effective and dose-dependent antioxidant activities. Our findings were of great value in terms of
developing polysaccharides with potential natural antioxidants.
Tire-Based Anti-Seismic Fibers to Increase the Ductility of Traditional Hydraulic Lime Concrete
Authors: BELABID Abderrahim
Published: February 2024

Abstract: Fibers have been widely used in construction since antiquity to reinforce raw earth or lime-based mortar. They prevent the propagation of micro-cracks and improve cohesion and shear strength. High-elasticity and plasticity fibers also enhance the material's capacity to absorb energy. The aim of this paper is to investigate the possibility of improving the seismic behavior of traditional buildings through the incorporation of fibers extracted from waste tires known for their high ductility. The objective is to recycle this non-biodegradable waste and utilize its mechanical characteristics to enhance the seismic performance of traditional buildings. Rubber fibers were incorporated at a rate of 1.5% and 3% on a comparative traditional hydraulic lime concrete. Ductility parameters are estimated from the analysis of stress-strain diagrams obtained by applying uniaxial compression tests in accordance with French standards NF P94-420, and NF P94-425. The results show a significant improvement in the traditional hydraulic lime concrete ductility after the addition of fibers made from tire waste. This method will enable the recycling of tire waste, environmental protection, and enhanced seismic performance of traditional structures. The aspects to be addressed for the development of research fields on earthquake-resistant fiber technology were also formulated.
Experimental Characterization of the Thermal and Mechanical Properties of Earth Bricks Stabilized by Alkaline Solution and Reinforced with Natural Fibers: A Comparative Study
Authors: CHAR Mohamed
Published: February 2024

Abstract. The use of earth bricks is a sustainable and environmentally friendly alternative to traditional building materials. However, these bricks can be vulnerable to erosion and extreme climatic conditions, which may limit their use in arid and semi-arid regions. In this experimental study, the aim was to improve the thermal and mechanical properties of earth bricks by stabilizing them with a mixture of alkaline solution and reinforcing them with natural fibers (maize, reeds, and olive). To this end, we designed earth bricks with different fiber percentages (from 0% to 8% of soil weight) and a fixed percentage of alkaline solution of 1.5%. After 28 days, the bricks were subjected to an experimental study to assess their thermal and mechanical cleanliness. The results showed that bricks stabilized with a fiber percentage of 2% and 3% had the best mechanical properties. They also showed an increase in thermal resistance as the percentage of fibers used increased. In addition, these bricks had higher compressive and tensile strengths than unstabilized bricks. This experimental study demonstrated that stabilizing earth bricks with a mixture of alkaline solution and fibers significantly improved their thermal properties.
Comparative Analysis of the Effect of Thermal Insulation on the Energy Requirements of a Tertiary Building in Meknes
Authors: BOUCHARK A.
Published: February 2024

Abstract. Thermal insulation materials are essential for minimizing heat loss in winter and heat gain in summer in buildings, irrespective of the presence or absence of air conditioning systems. The right choice of insulation materials paves the way for considerable savings in buildings' energy requirements, while rationalizing the use of air-conditioning systems. This is all the more important in Morocco, where the building sector is one of the biggest consumers of energy. Consequently, improving the energy efficiency of buildings is an imperative, especially in the current context characterized by the gradual depletion of fossil resources and ever-rising energy costs. Our study focuses on the practical impact of integrating different insulation materials, including phase-change materials (PCMs), hemp concrete and polystyrene, into the structure of a tertiary building in Meknes, Morocco. The results of this research highlight that the incorporation of effective thermal insulation in the building's various construction elements results in substantial reductions in energy requirements, both in terms of heating and cooling. It should be noted that this study was carried out using energy simulations with TRNSYS software.
Physical and Thermal Properties of Raw Earthern Bricks from Ksar Ait Benhaddou
Authors: LECHHEB Mahdi
Published: February 2024

Abstract. The deterioration of historical earthen architecture in the Drâa-Tafilalet region of Morocco is becoming a significant concern. These structures are susceptible to various natural and human-induced factors, leading to their deterioration. Our research focuses on the recycling and valorization of debris from the deteriorated walls of Ksar Ait Benhaddou to potentially facilitate restoration. Various techniques were employed to characterize the debris from Ksar Ait Benhaddou, including geotechnical analysis (Atterberg limits, grain size), physicochemical assessment (X-ray diffraction, Infrared spectroscopy, X-ray fluorescence), and microscopic examination (Scanning electron microscopy). Standardized brick specimens were created from debris waste paste mixed with 22% water by mass. Additional specimens were prepared by incorporating stabilizers (portland cement or lime) or natural plant fibers (wheat straw) into the debris, with a water/solid ratio of 22%. The prepared specimens underwent aging for different periods (0 to 4 days). The study investigated the impact of aging duration and three additives on mechanical properties, material thermal conductivity, and hydrate formation. The debris exhibited medium plasticity, consisting of non-swelling clays and sand. The compressive strength of cement-stabilized samples yielded the best results, reaching 1.90 MPa for the DC5 sample. The thermal conductivity of samples stabilized with cement increased, contrasting with lime and straw, which had the opposite effect.
Traditional Earth Architecture as a Tool for Sustainability and Adaptation to Climate Change of Heat and Cold Extremes
Authors: EL HARROUNI Khalid
Published: February 2024

Abstract. The design of sustainable architectural and urban spaces should be one of the essential pillars of any strategy for sustainable development and adaptation to climate change, particularly for the population living in rural areas who suffer from cold during winter and heat during the summer. This paper focuses on the traditional earth-based materials buildings and tries to see to what extent the building envelope could be improved to achieve and further confirm the objectives: improving thermal comfort and reducing heat loss through the traditional envelope (walls, roof, glazing, low floor). The paper is based on bioclimatic architecture principles and adopts passive energy efficiency in two different climatic contexts, hot and cold. The analysis of the approach method includes three issues: 1) the bioclimatic analysis of the environment/site including the building ambiance; 2) thermal comfort; and 3) thermal performance. The methodological tools are based on the bioclimatic analysis of the site and the ambiance for the first two issues; and the prescriptive approach of Moroccan thermal regulation for the third issue. The built environment constructed with traditional materials, once improved, is able to prove that it is respectful of the environment and without any risk to the user's health. In addition, this traditional architecture confirms the objectives of sustainable development.
Assessing the Feasibility, Usability, and Durability of Recycled Construction and Demolition Waste in Road Construction in Morocco
Authors: NAIM Amine
Published: February 2024

Abstract. Growing concerns about environmental sustainability and increasingly restrictive waste management regulations have led to the use of construction and demolition wastes (CDWs) as recycled aggregates for civil engineering projects, such as construction and infrastructure development. In this context, this paper presents an experimental laboratory analysis of the technical and environmental properties of recycled aggregates obtained from selected CDWs, conforming to European standards. The technical evaluation encompassed composition tests, particle size distribution (granulometry), density, water absorption, shape, the Los Angeles test, and the Micro-Deval test. The environmental assessment focused on the presence of potential contaminants, such as PAHs (polycyclic aromatic hydrocarbons), PCBs (polychlorinated biphenyls), and BTEX (benzene, toluene, ethylbenzene, and xylene). The laboratory test results are discussed and compared with current requirements. The paper concludes with key findings and recommendations derived from this investigation.
Structural Characterization of Stone Flooring “Calçada Marble”, in Lisbon, Portugal
Authors: EL OMARI Mohamed
Published: February 2024

Abstract. The Lisbon "Calçada" sidewalks have a traditional style made of small flat and irregular cobblestones, representing magnificent mosaics. This work presents the characterization and identification of the mineralogical phases of sidewalk stones, originating from Lisbon, Portugal. Samples referenced MEKPBL (white) and MEKPNL (grey-black) were studied by means of Raman spectroscopy, ATR-FTIR and XRD. All Raman spectra show a strong band around 1089 cm-1 which can be attributed to the v1-symmetric stretching mode of (CO3)2-, indicating that calcite is the main crystal phase in both samples. All Raman spectra of MEKPNL show also graphite fingerprints localized around 1329 cm-1 and 1607 cm-1, which are characteristic respectively of the D and G peaks of the carbonaceous material. These carbonaceous materials are the substance responsible of the grey-black color to these stones. Furthermore, the Raman spectra of the MEKPNL sample show also a weak Raman band located at 460 cm-1 which can be attributed to the symmetrical stretching of Si-O-Si, characteristic of the α-quartz. Furthermore, ATR-FTIR and XRD analyses supported the Raman results.
Investigating Cultural Dimensions in Sustainable Tourism: Carrying Capacity Assessment and GIS-based Management Strategies for Historic Buildings
Authors: SIMOU Sana
Published: February 2024

Abstract. This research delves into the sustainability of tourism at Tour Hassan, a historic building in Morocco, by examining its carrying capacity and implementing GIS-based management strategies. As a significant cultural heritage site, Tour Hassan draws a considerable number of visitors. The study involves a comprehensive assessment of the site's carrying capacity, encompassing visitor flow analysis, infrastructure evaluation, and spatial limitations. Informed management strategies are then devised based on these findings. Leveraging Geographic Information Systems (GIS), data-driven decision-making processes are employed to optimize visitor experiences while safeguarding the historical building's integrity. This case study provides valuable insights into the effective management of tourism in historic sites, ensuring their long-term conservation and sustainable development.
Assessment of the Mechanical and Thermal Properties of Local Building Materials Stabilised with Gum Arabic in the Drâa-Tafilalet Region, South-East Morocco
Authors: EL MANSOURI Charaf Eddine
Published: February 2024

Abstract. Morocco enjoys a very remarkable earthen architectural heritage throughout the southeast of the country, earthen constructions which are characterized by its ability to absorb and reject moisture from the indoor air according to the fluctuations of the microclimate of the building guarantees a passive indoor comfort that would save energy. Unfortunately, earthen structures suffer from rapid degradation due to climatic changes (temperature, air humidity, water...). This study concerns mechanical, thermal characterization and durability of compressed earth blocks manufactured (CEB) with clay, gum arabic with different proportions. For this purpose, the mass percentages of 1%, 2%, 3%, 4% and 5% of gum arabic by contribution to the total mass are retained for this research work. cylindrical bricks of CEB are manufactured to carry out mechanical tests, and those of prismatic form are adapted for the determination of thermal conductivities with the method "house has high insulation". The use of gum arabic as a binder in construction has given satisfactory results. At a rate of 5% of gum arabic the bricks are associated with a compaction stress of 5.78 MPA for the compressive strength, allow us to obtain CEB with an acceptable mechanical strength and a better resistance to rainwater. In addition, the values of thermal conductivity measured, show that when the rate of gum arabic increases, the thermal conductivity rises. The thermal conductivities of all formulations vary between 0.72 and 1.05 W/(m.K). The durability test carried out on the stabilized and non-stabilized bricks, shows that the specimens not stabilized by gum arabic are totally degraded from 5 min of immersion, On the other hand those stabilized by gum arabic kept their shape more than 5 hours. This study proved the effectiveness of CEB stabilized by gum arabic for use as new sustainable construction materials in the region of Drâa-Tafilalet (southeast of Morocco).
Pelatihan Google Classroom bagi Guru IPA SMP di Kabupaten Gunungkidul untuk Meningkatkan Kemampuan Guru dalam Mengelola Pembelajaran Online
Authors: Suyanto Slamet , Limiansi Kintan , Aprilisa Ema , Suratsih Suratsih
Published: February 2024

Pengabdian kepada masyarakat ini bertujuan untuk meningkatkan kemampuan guru IPA SMP di Kabupaten Gunungkidul dalam memilih, merancang, melaksanakan, dan mengevaluasi pembelajaran online dengan menggunakan Google Classroom. Materi pelatihan meliputi gambaran umum pembelajaran online, pelatihan management pelajaran dengan Google Classroom, pelatihan video converence dengan Google Meet, serta pelatihan evaluasi dengan Google Form. Berdasarkan analisis pretest dan posttest terdapat peningkatan pengetahuan peserta terkait fitur utama Google Classroom, cara mengundang siswa, cara pembuatan tautan pertemuan daring, dan pengetahuan bahwa setiap kelas dapat dibimbing oleh lebih dari satu orang guru. Pelatihan ini dinilai cocok dengan kebutuhan peserta. Hal tersebut diketahui melalui kuisioner yang dibagikan pada akhir pelatihan. Sebanyak 65% peserta dapat mengetahui cara mengoperasikan Google Classroom, 20% peserta dapat mengetahui fitur Google Clasroom yang sesuai untuk mendukung proses pembelajaran secara daring, dan 15% peserta menyatakan ingin tahu lebih banyak mengenai Google Classroom untuk melaksanakan pembelajaran daring.
Pengaruh Cahaya Terhadap Proses Fotosintesis pada Tanaman Naungan Dan Tanaman Terpapar Cahaya Langsung
Authors: Maftukhah Maftukhah , Turrohmah Ulfa Ulf , Sholikhah Nurul Izzatush , Fawaida Ul Ulya
Published: February 2024

Fotosintesis adalah proses memasak makanan bagi daun untuk memperoleh energi.dalam proses fotosintesis berlaku pada daun yang memiliki zat hijau daun. Sejauh ini kita mengetahui bahwa proses fotosintesis membutuhkan cahaya. Namun dengan seiring perkembangan waktu pemahaman tersebut diperdalam oleh para pengajar dan  menekankan pada siswa bahwa fotosintesis tidak hanya berlangsung dengan naungan cahaya melainkan juga bisa tanpa cahaya. Prses fotosintesis terjadi melalui dua tahap yaitu reaksi terang dan reaksi gelap. Dengan proses fotosintesis tumbuhan dapat melangsungkan kehidupannya. Penelitian literatur bertujuan memberikan kepahaman pada siswa yang lebih mendetail dengan bantuan visual agar siswa mampu memahami lebih dalam materi fotosintesis. Penelitian ini menggunakan studi literatur dengan acuan beberapa jurnal yang telah didapatkan.Kata kunci: Fotosintesis, reaksi terang, reaksi gelap
Pengelolaan dan Pemanfaatan Sampah Plastik dengan Metode Ecobrick menjadi Barang yang Bermanfaat di Desa Liang Ulu
Authors: Bharata Wira , Auliyaa Tazkia Muchlisa , Oliviani Nadira
Published: February 2024

Salah satu masalah yang selalu dihadapi oleh sebagian besar wilayah di Indonesia adalah terkait sampah. Jumlah penduduk di Indonesia semakin bertambah setiap tahunnya, hal ini turut mempengaruhi bertambahnya volume timbunan sampah yang dihasilkan dari aktivitas manusia. Desa Liang Ulu, Kota Bangun memiliki jumlah penduduk sebanyak 2.558 jiwa, dimana terdapat 10 rukun tetangga dari 3 dusun yang ada. Peningkatan jumlah penduduk di Desa Liang Ulu, akan berdampak pula pada peningkatan limbah sampah dari aktivitas yang dilakukan oleh masyarakat. Sejauh ini belum ada langkah yang signifikan dalam pengelolaan sampah plastik di Desa Liang Ulu. Tujuan dari program pengabdian ini yaitu untuk menimbulkan kesadaran masyarakat Desa Liang Ulu terhadap pengelolaan sampah khususnya pada sampah plastik. Adapun pengelolaan sampah plastik yang dilakukan yaitu dengan menggunakan metode ecobrick dan akan dikreasikan menjadi barang yang bermanfaat serta bernilai jual yang tinggi.
Project-Based Learning in mathematics education: A bibliometric study on 2014–2023 scopus database
Authors: Susanti Mathilda , Retnawati Heri , Sulistyaningsih Eny , Kartianom Kartianom , Rosyada Munaya Nikma , Kassymova Gulzhaina K , Sotlikova Rimajon
Published: February 2024

Project-based learning is ommited by the curricula of various countries. For the future development, the extent of research related to project-based learning needs to be mapped. This literature review research does a bibliometric analysis of project-based learning research published in Scopus-indexed journals over the last ten years. There are 802 articles from the Scopus database in 2014-2023. The R package and VOSViewer tools are used to perform bibliometric analysis. The results are analyzed and intepreted, including the distribution per year, subject area, affiliation, country or region, citations, main information, treemap, authorship, most cited documents, relationships between years, dendrogram, collaboration between authors, collaboration between countries and continents, as well as the relationship between keywords in the article. The number of research increased significantly from 2014 to 2022. More than 50% of these came from social sciences field. Universitas Negeri Malang has published the most articles, while the United States is most publications country. Although the United States has the most documents, Spain is the the most cited country. The most cited document is written by Kokotsaki et al. in 2016. United States, China, Australia, France, and the United Kingdom often collaborate between countries and continents.
Students’ mathematical critical thinking through the conceptual change approach
Authors: Maghfiroh Fitria , Dasari Dadan
Published: February 2024

Critical thinking ability is one of the higher order thinking skills. Students who have high critical thinking skills are expected to have the ability to analyze problems properly and precisely. The purpose of the present study was to find out the differences in students' mathematical critical thinking skills who received learning using the conceptual change approach and those who received conventional learning, namely the scientific approach. This study was conducted at a junior high school in South Tangerang City, Banten Province. The research method used was a quasi-experimental research design with a post test only control design. The research sample consisted of 70 students consisting of 37 students in the experiment group and 33 students in the control group selected by a cluster random sampling technique. Results indicate that students' mathematical critical thinking skills who learned with the conceptual change approach are higher than those of students who learned by the scientific approach. The critical thinking skills of students who received learning by the conceptual change approach were 72.64%, on the indicator of analyzing arguments, 67.23%, on the indicator of  making conclusions,  84.46%, on evaluating, and 61.85%  on solving problems
PERJUANGAN PANGERAN NOTOKUSUMO DAN IR. SUKARNO: KAJIAN KOMPARATIF HISTORIS
Authors: Juwono Harto
Published: February 2024

AbstrakTulisan ini merupakan hasil kajian terhadap dua tokoh terkenal dalam sejarah Indonesia khususnya sejarah Jawa, yaitu Pangeran Notokusumo yang kemudian menjadi KGPA Paku Alam I dan Sukarno yang kemudian penjadi presiden pertama Indonesia. Tujuannya adalah untuk mengangkat kesamaan nilai yang diperoleh dari proses perjuangan keduanya dalam menghadapi siatuasi di bawah dominasi kolonial. Untuk bisa mewujudkan tujuan ini, metodologi yang digunakan adalah strukturasi dengan tekanan pada peran agent dalam proses interaksi dan reproduksinya terhadap struktur yang ada, sehingga menghasilkan suatu bentuk struktur baru. Dengan analisis ini, proses perjuangan mereka bisa digambarkan dan terutama interaksi antara agent dan struktur yang ada (agency). Dari situ bisa ditemukan adanya bentuk perbandingan historis dalam struktur yang berbeda namun dengan system yang serupa, yaitu peralihan kekuasaan dari satu rezim ke rezim yang lain. Karena batasan dari tulisan ini adalah era sebelum kemerdekaan, data yang digunakan difokuskan pada data atau referensi yang dihasilkan pada era kolonial atau sezaman seperti khasanah arsip yang tersimpan di ANRI yaitu bundel Yogya, dengan tambahan beberapa referensi sumber sekunder.Keywords: Notokusumo, Sukarno, Pergantian Kekuasaan, Kerjasama, Struktur.
KEMUNCULAN DAN PERKEMBANGAN MUSIK POP MINANGKABAU TAHUN 1950-1990-AN
Authors: Annisa Annisa , Pratama Fikri Surya
Published: February 2024

Abstrak Memasuki perkembangan teknologi, kesenian tradisional Minangkabau mulai menjarahi alat-alat modern dalam mengembangkan kesenian daerah, salah satunya lahirnya Musik Pop Minangkabau, dimana unsur budaya musik Barat akan membaur dengan unsur musik tradisional Minangkabau. Artikel jurnal ini akan membahas sejarah muncul dan berkembangnya Musik Pop Minangkabau pada masa Orde Baru di Indonesia. Jenis penelitian ini adalah kualitatif, dimana metode yang digunakan adalah metode penelitian sejarah, dengan langkah-langkahnya: 1) heuristik, teknik pengumpulan data berupa studi pustaka terhadap tulisan yang membahas musik pop minangkabau, serta observasi menuju toko kaset klasik Musik Pop Minangkabau dan rumah komposer Musik Pop Minangkabau seperti Syahrul Tarun Yusuf; 2) kritik sumber data, baik secara ekstern dan intern; 3) analisa terhadap sumber data; 4) historiografi atau penulisan hasil penelitian. Hasil penelitian menunjukkan budaya Minang mulai memiliki kelonggaran, seperti dalam bidang musik. Perubahan ini terjadi karena adanya perubahan pola fikir yang menuju modern dengan mengkombinasikan pengaruh budaya Barat pada musik dan filosofi-filosofi Minangkabau. Namun perubahan ini tidak meninggalkan filosofi Minangkabau secara seutuhnya. Era 1950-an dianggap sebagai era kelahiran Musik Pop Minangkabau. Pada era tahun 1970 perkembangan musik pop Minangkabau terus menjamur dengan lahirrnya bintang-bintang penyanyi dan  komposer musik pop Minang. Meski sempat mengalami kevakuman pada era 1980-an, era 1990-an kembali menjadi titik bangkit industri Musik Pop Minangkabau dengan adanya perubahan pada komposisi lagu serta instrumentasi yang mulai menggunakan alat instrumen musik digital atau Musical Instrument Digital Interface (MIDI).Kata kunci: Minangkabau, Musik, Perkembangan, Pop, Sejarah.
DAMPAK SOSIAL-EKONOMI PERKEMBANGAN INDUSTRI PERKEBUNAN DI SUMATERA TIMUR PADA TAHUN 1863-1930
Authors: Supriyadi Pasa Hobi Dermawan
Published: February 2024

AbstrakPada tahun 1863-1930 Sumatera Timur mengalami perkembangan industri perkebunan secara pesat, sehingga mendapat perhatian utama oleh pemerintahan Hindia Belanda. Topik yang dibahas dalam penelitian ini adalah dampak sosial-ekonomi yang disebabkan oleh perkembangan tersebut. Oleh karena itu, penelitian ini memuat beberapa rumusan masalah mengenai hal-hal yang berkaitan, antara lain: membahas perkembangan perkebunan di tahun 1863-1930, pembangunan infrastruktur logistik, dan migrasi etnis. Penjabaran rumusan masalah tersebut dilakukan menggunakan metode sejarah yang diantaranya, yaitu menentukan topik penelitian, heuristic (pengumpulan sumber), kritik sumber (kritik intern dan kritik ekstern), interpretasi, dan historiografi. Penelitian ini menggunakan dua jenis sumber, antara lain: sumber primer dan sumber sekunder. Sumber pirmer yang digunakan berupa surat kabar sejaman salah satunya adalah Deli Courant. Sumber sekunder yang digunakan adalah buku-buku dan artikel ilmiah yang berkaitan dengan topik penelitian. Dari penelitian ini, kesimpulan yang didapat, diantaranya beberapa perusahaan swasta memiliki pengaruh terhadap masifnya perkembangan industri perkebunan khususnya tembakau di Sumatera Timur, dampak ekonomi yang terjadi ditandai dengan pembangunan infrastruktur khususnya infrastrukutur logistik, dan migrasi etnis yang terjadi akibat kebutuhan tenaga kerja yang begitu besar. Dengan demikian, secara garis besar dampak yang dihadirkan dari perkembangan industri perkebunan di Sumatera Timur tahun 1863-1930 lebih mengarah ke sisi positif daripada sisi negatif.  Kata kunci: Industri Perkebunan, Migrasi Etnis, Infrastruktur Logistik
PENGARUH TEKNOLOGI INFORMASI PADA MANAJEMEN SDM UMKM DI KOTA KENDARI
Authors: Halim Asy’ary Ayuningtiyas Putri Mumpuni , Asraf Asraf
Published: February 2024

Penelitian ini mengkaji pengaruh teknologi informasi pada manajemen sumber daya manusia (SDM) di Usaha Mikro, Kecil, dan Menengah (UMKM) di Kota Kendari. Menggunakan pendekatan kualitatif, penelitian ini mengeksplorasi bagaimana implementasi teknologi informasi memodifikasi proses dan praktik manajemen SDM di UMKM. Studi ini melibatkan analisis mendalam terhadap kasus-kasus spesifik UMKM di Kendari, dengan data yang dikumpulkan melalui wawancara, observasi, dan analisis dokumen. Hasil penelitian menunjukkan bahwa teknologi informasi berkontribusi signifikan dalam efisiensi proses rekrutmen, pelatihan, penilaian kinerja, dan komunikasi internal. Meskipun terdapat tantangan dalam penerapannya, terutama terkait dengan keterbatasan sumber daya dan keahlian, penggunaan teknologi informasi secara efektif telah terbukti meningkatkan kinerja organisasi. Studi ini memberikan wawasan baru tentang pentingnya integrasi teknologi informasi dalam strategi manajemen SDM di UMKM, khususnya di lingkungan bisnis yang dinamis seperti di Kendari. Temuan ini memberikan dasar bagi UMKM untuk mengadopsi strategi teknologi informasi yang lebih inovatif dan efisien dalam manajemen SDM, yang pada akhirnya dapat meningkatkan kinerja dan keberlanjutan bisnis
ANALISIS KONTRIBUSI PAJAK DAN RETRIBUSI DAERAH PADA PENDAPATAN ASLI DAERAH DI DINAS PENDAPATAN ASLI KOTA MAKASSAR
Authors: Rianthy Gina Anggi
Published: February 2024

This study aims to determine the development of the contribution of local taxes and regional levies to the local revenue of Makassar City. In this study, data were obtained through observation, documentation, and literature study. The population includes all reports on the realization of the budget, reports on the realization of regional levies and regional taxes for the City of Makassar, and as a sample, reports on the realization of regional income and budget reports for 2020-2023. Meanwhile, the analytical method used is the contribution of PAD, namely Regional Taxes and Levies. The results of this study indicate that the contribution of Regional Tax Revenue and Regional Levies to regional original revenues often fluctuates or is not constant from 2020-2023. Based on the contribution of local taxes and regional levies to regional original income, it has fluctuated or not been constant in the last three years (2020-2023) where the lowest contribution of local taxes to PAD in 2022 is 99.36% and the highest contribution of regional taxes to PAD in 2021 of 99.49% while regional levies have increased in 2022 by 63.97% from the previous year. So, it can be concluded that regional tax revenues and regional levies have increased depending on Regional Original Revenue, which can be concluded that the contribution of regional taxes and regional levies depends on Makassar City Regional Original Revenue.
PERMINTAAN PASAR TERHADAP PERUSAHAAN PADA PASAR PERSAINGAN SEMPURNA
Authors: Hasrul Saddam , Andiansyah Farma
Published: February 2024

Markets may be the common trading instruments for merchandise and administrations. Market costs are shaped by various variables that at the time shape the demand and supply of products and services. Customer demand is influenced by various variables such as costs, customer salaries, tastes, desires and benefit levels. Meanwhile, producer supply is also influenced by various variables, such as mashlahah, profit, and cost. The interaction between supply and demand that will frame the adjustment point can be altered from either the demand or supply side, either due to organized deviations or unstructured deviations. Idealizing competition exhibitions will be able to provide reasonable costs for dealers and buyers. Therefore, if market instruments are disrupted, cost equity will not be achieved. Islam places the market in an important position in the economy. So the role of the government is very important to encourage the implementation of idealizing the elements of the exhibition such as the regulation of mediation of the acceptance of costs that remain based on equity. Storefront equilibrium in the short run in a perfectly competitive storefront can be a condition where the amount supplied rises to the amount demanded.