High Zinc Research Articles

Effect of copper addition on precipitation behaviors and mechanical properties of Mg-Zn-Cu alloys with respect to high zinc

The current work deals with the precipitation behaviors and mechanical properties of the high zinc content of the Mg-Zn-Cu system alloys using gravity casting. Differential scanning calorimetry (DSC) was conducted to describe the solidification process and precipitation behaviors. Thermodynamic calculations were carried out to determine the precipitation conditions using the Thermo-calc software. The microstructures were characterized by an optical microscope (OM), scanning electron microscope (SEM), electron probe micro analysis (EPMA), transmission electron microscopy (TEM), and confocal laser scanning microscope (CLSM). Tensile tests and micro-hardness tests were applied to investigate the mechanical properties. The results substantiated that the MgZnCu phase precipitates in Cu-containing alloys and that the precipitate content, as well as the precipitate temperature, increased with the Cu content from 0 to 3 wt.% according to the thermodynamic calculations and the DSC results. The measured micro-hardness of the alloy was 53.2, 57.9, 55.8, and 52.5 VHN, respectively. The ultimate tensile strength (UTS), yield strength (YS), and elongation (EL) revealed a λ-like trend of the alloys, and Mg-7Zn-1Cu alloy exhibits the optimum tensile properties with the UTS of 258.9 MPa, YS of 126.2 MPa, and the EL of 14.2%.

Aprimoramento de barras de cereais de aveia com adição de farinha de Araucaria angustifolia: semente, amêndoa ou casca

ABSTRACT: The feasibility of enhancing oat cereal bars, widely recognized for their health benefits, was investigated by replacing up to 5% oats with whole seed, almond, or steam-cooked pinhão husk flour. Pinhão contributes with resistant starch, antioxidant compounds, and minerals. The control oat bar (30.5% of the mixture), without pinhão flours but containing brown sugar (25.5%), raisins (15.0%), glucose (15.0%), coconut oil (3.0%), gelatin (0.5%), and water (10.0%), provides 75.53 kcal, with 15.66% carbohydrates (on a dry basis), 2.88% insoluble fiber, 0.70% soluble fiber, 1.82% protein, 0.62% lipids, and 0.32% minerals. Bars replacing up to 5% of oats with almond, husk, or whole seed flour showed statistically similar compositions, except for lipids, few minerals, phenolic compounds, and antioxidant activity. Concerning daily recommendations, a 22 g bar offers low energy (3.78%, Brasil, 1998) and proportionally high mineral content, including potassium (34.64%), zinc (81.58%), magnesium (108.55%), iron (421.18%), copper (192.98%), calcium (395.13%), and manganese (1,027.00%). Additionally, they exhibit a significant content of total phenolic compounds (8.66 mg GAE/g) and antioxidant capacity (24.43 mg Trolox/g). These innovative bars were well-received in sensory evaluations and demonstrated good commercial potential. Notably, a bar that replaced 5% oats with husk flour could be a viable option for microenterprises due to simplified technology, contributing to waste valorization and encouraging the preservation of the Araucaria Forest.

Experimental Study on Activated Sulfur Selection from High Alkalinity Lead Zinc Flotation Tailings

This article takes the flotation tailings of a high sulfur lead-zinc mine in Inner Mongolia as the research object. XRD and BPMA automatic process mineralogical analysis systems are used to analyze the mineral composition of the tailings, and experimental research is conducted on the comprehensive recovery of pyrite through activated flotation. The results showed that using concentrated sulfuric acid as an activator, ethyl xanthate and isoamyl xanthate as a combination collector, and adopting a flotation process of “one coarse, one sweep, and two fine”, a concentrate product with a yield of 9.31% and a sulfur grade of 37.78% can be obtained, and the sulfur recovery rate in the concentrate can reach 77.13%; The comprehensive recovery and utilization of sulfur in the original flotation tailings have been achieved.

Study of high iron and high zinc contents varieties of rice in Jharkhand condition through biofortification

Study of high iron and high zinc contents varieties of rice in Jharkhand condition through biofortification

Timing of dietary zinc additions during gestation for improved piglet survival.

The objectives of this study were to determine a practical approach to feeding elevated dietary zinc (Zn) to gestating sows in a commercial setting and to confirm preweaning mortality could be reduced by feeding high Zn to sows during different periods of gestation. The study was conducted at a commercial sow farm in the upper Midwest. Mixed parity sows (n = 267) over three consecutive weekly farrowing groups (sows farrowing within 1wk) were assigned randomly to one of the three dietary treatments within parity. Treatments consisted of: (1) control sows fed a corn-soybean meal diet containing 206mg/kg total supplemental Zn supplied by zinc hydroxychloride; (2) breed-to-farrow: as control + 147mg/kg supplemental Zn as ZnSO4 (353mg/kg total supplemental Zn) fed from 5 d after breeding to farrowing; and (3) day 110-to-farrow: as control fed from breeding to farrowing + 4,079mg/kg supplemental Zn as ZnSO4 (4,285mg/kg total supplemental Zn) starting day 110 of gestation until farrowing. At farrowing, individual piglets were weighed and identified within 12h of birth. Data were analyzed using PROC GLIMMIX of SAS and the model considered the fixed effect of dietary treatment and random effect of farrowing group. Dietary treatments did not affect number of total pigs born per litter. For breed-to-farrow sows, there was an increase in the percentage of pigs born alive compared to sows fed the control and day 110-to-farrow treatments (P < 0.001). The number of stillborn pigs expressed as a percentage of total litter size at birth decreased for breed-to-farrow sows (P < 0.001) compared with control or day 110-to-farrow sows. Mortality of low birth weight piglets from birth to weaning did not differ among dietary treatments (P = 0.305); however, a trend for decreasing post-natal mortality (P = 0.068) of normal birth weight pigs was observed for pigs born to sows fed elevated Zn 5 d before farrowing. In conclusion, feeding elevated Zn to sows throughout gestation increased the proportion of pigs born alive suggesting that elevated gestational Zn intake makes piglets more robust to endure the stresses of farrowing and decreases intrapartum mortality. Under the conditions of this study, elevated Zn intake of sows did not influence piglet post-natal survival. However, feeding high zinc throughout gestation may decrease piglet mortality during the parturition process.

Novel hollow MoS2@C@Cu2S heterostructures for high zinc storage performance.

Heterostructured materials have great potential as cathodes for zinc-ion batteries (ZIBs) because of their fast Zn2+ transport channels. Herein, hollow MoS2@C@Cu2S heterostructures are innovatively constructed using a template-engaged method. The carbon layer improves the electrical conductivity, provides a high in situ growth area, and effectively restricts volume expansion during the recycling process. MoS2 nanosheets are grown on the surfaces of hollow C@Cu2S nanocubes using the in situ template method, further expanding the specific surface area and exposing more active sites to enhance the electrical conductivity. As expected, an admirable reversible capacity of 197.2 mA h g-1 can be maintained after 1000 cycles with a coulombic efficiency of 91.1%. Therefore, we firmly believe that this work points the way forward for high-performance materials design and energy storage systems.

Электронно-зондовый микроанализ археологического цветного металла (на примере находок V–VI вв. н. э. из погребений Варнинского могильника)

The article introduces into scientific circulation the first data on the composition of non-ferrous metals of the early Middle Ages in the territory of the river Cheptza. To obtain a comprehensive description of archaeological metal of the 5th–6th centuries samples of 55 items from 15 burials of the Varninsky burial ground were prepared. To conduct the study, a previously tested method of quantitative elemental analysis of the samples was used. The obtained data were entered into an analytical table containing the information on the percentage of components and data from archaeological finds. The analysis of the results revealed that in the 5th–6th centuries people used mainly multicomponent zinc-containing alloys for the manufacture of jewellery and costume elements. The formal approach to the classification of non-ferrous metal alloys was revised: in addition to bronze and brass, zinc-containing bronzes are singled out into a special category illustrating the numerous remelting of non-ferrous metals. Particular attention is drawn to the large number of things based on not copper alloy, but tin alloy. So-called prescription alloys with specified characteristics were identified in small quantities: "pure" twocomponent brass with a high zinc content was identified in only four samples, and bronze was represented by eight analysed samples. The first preliminary measurements illustrate that the population of the polomskaya culture mainly made necessary things from scrap non-ferrous metals and did not have the opportunity to obtain semi-finished products – ingots. The present investigation established the features of using electron probe analysis to study archaeological finds.

Genetic Diversity of Bio-fortified Lentils (Lens culinaris Medik.) through Simple Sequence Repeat Markers

Nepalese lentils are comparatively rich in iron and zinc, making it a potential crop of whole food solution to aid in the global battle against the micronutrient malnutrition. Understanding the genetic basis for uptake of grain iron and zinc is required to increase their stable concentrations along with these minerals in lentils. This study aimed at characterizing genetic variation in micronutrient high grain iron and zinc concentrations and exploring the potential in lentil accessions. A set of 25 lentil accessions was evaluated in two seasons across the three locations and genotyped by using 40 simple sequence repeat (SSR) markers that are linked with lentil iron and zinc concentrations. Out of the 40 SSR markers, 23 markers were found polymorphic while 12 were monomorphic, and 5 markers were null. These 23 polymorphic markers produced a total of 584 alleles, of which 52 were polymorphic alleles, and average alleles per locus was 11.49. The linkage disequilibrium (LD) analysis was done using a mixed linear model (MLM) that identified three SSR markers, PBALC 13, PBALC 206, and GLLC 563, associated with grain Fe concentration, explaining 9% to 11% phenotypic variation, respectively, and four SSR markers (PBALC 353, SSR 317–1, PLC 62, and PBALC 217) associated with grain Zn concentration, explaining 14% to 21% phenotypic variation, respectively. The pairwise genetic similarity index among 25 lentil accessions varied from 0.16 to 0.83. The identified SSRs exhibited consistent performance across two seasons and have potential for utilization in lentil molecular breeding program. SAARC J. Agric., 21(2): 27-40 (2023)

Impact of Feeding Biofortified Wheat (WB 2) Straw-based Diet on Immunity of Lactating Murrah (Bubalus bubalis) Buffaloes

Backround: Buffaloes contributes heavily to the livestock sector of India and buffaloes are preferred for milk production in India due to their efficiency and better nutrients in milk. Major part of their diet constitute roughage which is usually wheat straw in north-western region of India. WB 2 is a biofortified wheat variety with high zinc and iron levels in its grain, has been developed by ICAR-Indian Institute of Wheat and Barley Research in Karnal, Haryana. This study aimed at comparing the benefits of substituting conventional straw with WB 2 straw. Methods: The present experiment was conducted on 12 Murrah buffaloes, divided into two groups i.e., Control (T0) and Treatment (T1) based on body weight, parity and previous milk record. Feeding continued for a period of 90 days as per ICAR (2013) feeding standard. The wheat straw, oats fodder and concentrate mixture was fed in the ratio 50:15:35 (on DM basis) in both the groups. However, in control group, conventional wheat straw was used and in the treatment group, biofortified wheat variety straw was utilized. Result: Non-significant differences (P greater than 0.05) were observed when both the groups were compared for body weight and dry matter intake on fortnightly basis. Similarly, haematology was carried out on monthly basis and there were non- significant differences (P greater than 0.05) between the two groups. Non-significant difference for plasma IgG1 was also recorded. The study reveals that the feeding of biofortified wheat variety (WB 2) straw had no impact on immunity of lactating Murrah buffaloes compared to conventional straw-based diet.

Characterization of High Zinc Al-Zn-Mg-Cu Alloy By Electrochemical Noise and Current Transient Measurements

Electrochemical noise (EN) method and current transient measurements have been used in to characterize metastable pitting in high zinc Al-Zn-Mg-Cu alloy. The outcomes are evaluated against those from scanning electron microscopy and atomic force microscopy. Results of transient electrochemical analysis and image analysis are compared and explained based on heterogeneity of microstructures arising from presence of different precipitates.

High Reliability Tungsten-Doped Indium Zinc Oxide Thin Film Transistors for Display Applications

Recently, flat panel display technologies are based on amorphous silicon (a-Si), polycrystalline silicon (poly-Si) or amorphous oxide semiconductor (AOS) thin film transistors (TFTs) technology. In order to reach higher performance for ultra-high resolution display applications, the material selection for the channel layer is vital. AOS TFTs drawn lots of attention because of its advantages such as low leakage current, high driving current and high uniformity [1,3]. In this work, we presented a novel amorphous oxide semiconductor (AOS) material of gallium-free a-InWZnO thin film transistors (IWZO TFTs) which is very promising to be applied for ultra-high resolution display technology. Experiment In this work, we demonstrated the structure of a-IWZO TFTs processes. Figure 1 shows the schematic of the TFT cross-section. After growing a 550 nm thermal oxide layer as buffer layer, a 25-nm-thick of molybdenum was deposited by DC-sputter as the bottom gate electrode. A 10-nm-HfO2 was deposited by plasma-enhanced atomic layer deposition (PEALD) system as high-κ gate dielectric (GI). Then, post deposition annealing (PDA) was carried out to enhance the quality of the insulator layer. Next, an ultra-thin body a-IWZO was deposited by RF-sputter as channel layer. Finally, source and drain were defined by lift-off process and the gate contact via was etched by dry etching to finish the device fabrication. Result and Discussion Figure 1(b) shows the negative gate bias stress (NGBS) transfer curve (ID-VG) of a-IWZO TFTs with passivation layer. The experimental results have shown that passivation layer could keep the back channel of IWZO channel from exposing to oxygen and hydrogen from the atmosphere. Without the passivation layer, the back channel would contact moisture leading the diffused hydrogen atoms to fill oxygen vacancy sites and de-trap free carriers, causing the VTH shifts negatively. The ultra-thin a-IWZO TFTs with passivation layer exhibited a low subthreshold swing (S.S.) of 89.7 mV/dec, high on/off current ratio (ION/IOFF) of 2.1×107 and small threshold voltage shift (ΔVth) of -0.097 V during NGBS of -2MV/cm with 2000s. To sum up, the passivation layer could enhance the a-IWZO TFTs reliability. Reference [1] Kamiya, H. Hosono, NPG Asia Mater., vol. 2, pp. 15, 2010.[2] Nomura, H. Ohta, A. Takagi, T. Kamiya, M. Hirano, and H. Hosono, nature, vol. 432, no. 7016, pp. 488-492, 2004.[3] Y. Kuo, C. M. Chang, I. H. Liu, and P. T. Liu, Scientific reports, vol. 9, no. 1, pp. 1-7, 2019. Figure 1

Selective dissolution and kinetics of leaching zinc from lime treated electric arc furnace dust by alkaline media

The EAF steelmaking process generates 10–20 kg of dust per ton of steel, containing 15–30% zinc, making it a valuable secondary zinc resource. In this work, selective dissolution and kinetics of leaching zinc from lime (CaO) treated EAF dust using NaOH, KOH, and LiOH alkaline solutions were investigated. By reacting with CaO, insoluble ZnFe2O4 in EAF dust is converted to soluble ZnO and stable Ca2Fe2O5. Optimal zinc leaching conditions were achieved after 2 h at 70 °C and a S/L ratio of 1/300 (mg/ml). Among the alkaline solutions used, the zinc leaching rate was highest using 2 M NaOH solution at 99% zinc recovery. On the other hand, thermodynamic solubility calculations indicate that KOH is a better candidate for practical extraction as it can dissolve 6–8 times more zinc than NaOH. The prevailing rate-controlling mechanisms when using NaOH, KOH, and LiOH solutions were found to be the same. From 25 °C to 50 °C, chemical reaction was primarily rate-limiting. In contrast, from 50 °C to 70 °C, the controlling step later shifted to a product layer diffusion control – implying that higher temperatures and finer particle size are vital to achieving high zinc leaching rates. Finally, a solid by-product containing Ca2Fe2O5 and CaO only, which can be recycled in the iron and steelmaking process, was obtained via calcination at 500 °C.

Extracting zinc from ironworking dust having a high zinc content by vacuum silicothermic reduction

Zinc dust having a high ZnO content can be obtained after the preliminary treatment of zinc-bearing dust generated by the iron and steel industry by using a rotary kiln. However, this material has a high concentration of chloride salts that can affect the hydro-metallurgical extraction of metallic zinc. The present study used a vacuum distillation-vacuum thermal reduction process to recover zinc metal from this dust. This process first separated chloride and PbO by vacuum distillation and then extracted metallic zinc via the vacuum silicothermic reduction of ZnO. The results show that high-purity ZnO was prepared by vacuum distillation using the original zinc dust as a raw material. Both alkali metal chlorides and PbO in the dust could be removed with greater than 99 % efficiency by vacuum distillation at 1000 °C. Following this step, the slag contained more than 80 wt% Zn but less than 0.01 wt% chlorine and PbO. The vacuum thermal reduction process used the slag obtained from distillation as the raw material together with ferrosilicon alloy as a reducing agent. ZnO was reduced above 1000 °C and the recovery of this oxide exceeded 99 % using a reduction temperature of 1200 °C, reduction time of 2 h, and ferrosilicon mass ratio of 0.27. The main phase in the slag after reduction was SiO2 and the ZnO concentration was below 1 wt%, indicating a purity greater than 99 %. This method can realize the separation, recovery, and reuse of zinc-bearing dust to maximize the value-added utilization of this resource.

Sphere-Confined Reversible Zn Deposition for Stable Alkaline Aqueous Batteries.

The practical applications of alkaline zinc-based batteries are challenged by poor rechargeability with an insufficient zinc utilization ratio. Herein, a sphere-confined reversible zinc deposition behavior from a free-standing Zn anode is reported, which is composed of bi-continuous ZnO-protected interconnected and hollowed Zn microspheres by theKirkendall effect. The cross-linked Zn network with in situ formed outer ZnO shell and inner hollow space not only inhibits side reactions but also ensures long-range conductivity and accommodates shape change, which induces preferential reversible zinc dissolution-deposition process in the inner space and maintains structural integrity even under high zinc utilization ratio. As a result, the Zn electrode can be stably cycled for 390h at a high current density of 20mA cm-2 (60% depth of discharge), outperforming previously reported alkaline Zn anodes. A stable zinc-nickel oxide hydroxide battery with a high cumulative capacity of 8532 mAh cm-2 at 60% depth of discharge is also demonstrated.

Genetic gain and selection of stable genotypes in high zinc rice using AMMI and BLUP based stability methods

Rice is the staple food of almost half of the world’s population, impacting nutrition especially in children, pregnant women, and nursing mothers. Because the traits were quantitatively inherited, they are affected by changes in location and year. A RBD with three replications was used to identify superior and stable high-zinc rice genotypes in Uttar Pradesh, India. Grain zinc content (GZC) is negatively correlated with grain yield using genetic association study. There was a significant G × E interaction (GEI) and V16 and V21 for GYP and V9, V2 and V10 for GZC were identified as stable based on the AMMI model and bi-plot. V11, V5, V21 for grain yield per plant (GYP) and for GZC, V14, and V10 are found to be stable and common in all AMMI stability parameters. V6, V13 and V5 for GYP and V10, V8 and V2 for GZC were identified as stable based on the mean vs. WAASB bi-plot. V21 for GYP and V4 for GZC was the highest yielder and widely adaptable based on WAASBY scores. V13 for GYP and V1 for GZC were all-time winners. V13 and V1 have the highest predicted mean for GYP and GZC, respectively, based on BLUP. V6, V21and V13 were identified as stable and selected based on the multi-trait stability index (MTSI). These selected genotypes selected through BLUP-based stability methods, MTSI, and strength and weakness plots make it easier to evaluate and select genotypes for varietal recommendations and future Zn-fortified rice breeding studies.&#x0D; Keywords: GEI, High Zinc Rice, MTSI, Stable genotype

Baked crisps from Indian biofortified lentils: Effect of seed coat on rheology, texture and composition

Lentils (Lens esculenta), abundant in complex carbohydrates, proteins, dietary fiber, and micronutrients, stand out as a promising raw material for the rapidly growing snacks industry. Three Indian biofortified lentil varieties: L 4147, L 4717, and IPL 220 with high iron and zinc content were used as raw material to process them into baked crisps with varying hull content. The protein content of crisps ranged from 17.17 to 18.74 %. Each quality attribute showed a significant influence of lentil variety and its amylose content. L 4717 exhibited elevated peak viscosity, holding strength, and final viscosity. Hull, considered the main reservoir for minerals in lentils exerted significant and diverse effects on the textural, rheological, colour, minerals content and glycemic potential of the crisps. Hull incorporation lowered the holding strength, final viscosity, and setback of pastes. 3 and 6 % levels of hull in L 4717 increased storage modulus of lentil dough by 2.5 and 2 folds, respectively. Lentil dough with 3 % hull level exhibited softness and lower values for cohesiveness, gumminess, adhesiveness. For crisps without hull, IPL 220 and L 4717 recorded higher fracturability while crispness was higher for L 4147. For crisps with 3 % hull, textural attributes of L 4147 were better. With each serving capable of providing 6 to 11 % of the recommended daily allowance (RDA) for iron, zinc, and protein, these crisps have the potential to serve as valuable means to address hidden hunger, particularly among wide sections of the population, including children and youngsters.

Study on the influence of water ingress on the interface of high strength zinc coated steels and epoxy adhesives

This study aimed to assess the impact of humidity on adhesive joints comprising four different Zn-coated high strength steel substrates (SA, SB, SC, and SD) and two epoxy adhesives (EA and EB) at 70 °C. Several tests were conducted to analyse the effects of humidity on adhesive properties, under both dry and saturated conditions. Gravimetric tests were used to measure water absorption by the adhesives, while mechanical properties were evaluated through bulk tensile tests. Chemical structure changes were examined using Fourier-transform infrared spectroscopy (FTIR), and the glass transition temperature was determined using a DMA-like test. The water immersion behaviour of the substrates was studied through gravimetric tests and surface energy was analysed using contact angle measurements. The overall joint performance was assessed through gravimetric tests, and the mechanical impact of water was evaluated using single lap joint tests on both dry and aged joints, for one week and one month. The findings indicated that EB adhesive absorbed more water compared to EA, which did not reach saturation. FTIR analysis revealed significant chemical degradation in the EB adhesive after ageing, leading to greater deterioration in mechanical properties compared to EA. The bulk substrate tests showed similar surface energy among the substrates, with SA being the only substrate that did not corrode during water immersion. In terms of joint behaviour, cohesive failure was predominant in dry conditions, but as the joints aged, those with EB adhesive experienced a decrease in failure load due to adhesive degradation, while the interface remained strong. Joints with EA adhesive exhibited increasing interfacial failure, indicating weaker interfaces that allowed water ingress between the adhesive and substrate. Consequently, water uptake in the joints was higher for EA adhesive than for EB adhesive, contrary to the behaviour observed at the bulk level. SA and SD substrates demonstrated stronger interfaces with EA, likely due to their higher developed interfacial area ratio, which facilitated mechanical interlocking.

Panicle Architecture in Enhancing Grain Yield in Rice (Oryza sativa L.)

The architecture of the rice panicle is a crucial focus in breeding for both high yield and quality. It stands as a significant agronomic trait that influences the number of grains per panicle, playing a direct role in contributing to the overall yield of rice grains. Unravelling the genetic basis of panicle architecture is crucial for improving the grain yield in rice. In this study, the panicle architecture traits were meticulously dissected into five distinct components viz., number of primary rachis, number of secondary rachis, grain number on primary rachis, grain number on secondary rachis and total grain number. These components were systematically phenotyped in F2 and F3 population derived from a cross between DRR Dhan 48 and Maudamani. ‘DRR Dhan 48’ is a biofortified elite fine grain medium slender grain type cultivar with high zinc (22 ppm in polished rice) and low glycemic index (51.1). It has resistance to bacterial blight with the incorporation of xa5, xa13 and Xa21 in the background of Improved Samba Mahsuri. ‘Maudamani’ is a high yielding cultivar with high grain number and short bold grain type. Analysis of variance, histograms and boxplots revealed highly significant variation for the studied traits. Grain number in F2 population ranged from 29 to 333 grain with a mean of 162.72 whereas in F3, its varied from 49 to 368 with a mean of 184.17. Correlation analysis revealed significant correlation among the studied traits. The continuous variation observed in the population for panicle traits indicates that genetic control is governed by multiple minor loci. The presence of superior transgressive segregants highlights a complementary gene action influencing panicle architecture traits. The present investigation on panicle architecture offers scope for improving rice varieties and creating new germplasm resources and provides valuable information for further unravelling the genetic basis determining rice panicle architecture.

Zinc supports liver regeneration after partial resection.

Safe removal of extensive liver tumor burdens depends on regeneration of the remnant liver, which requires a large amount of zinc over a short period of time. We studied how zinc influences regeneration. We measured perioperative serum zinc concentrations after liver cancer diagnosis in 77 patients undergoing hepatectomy to determine how serum zinc affected short-term outcomes and remnant liver regeneration. Serum zinc concentration at diagnosis showed no correlation with inflammatory or nutritional parameters except for a weak correlation with the lymphocyte-to-monocyte ratio. When patients were divided into a high pre-hepatectomy zinc group (≥75 µg/dL, n= 39, H group) and a low zinc group (<75 µg/dL, n= 38, L group), short-term results such as mortality (p> 0.999), morbidity (p= 0.490), and hospital stay (p= 0.591) did not differ between groups. However, hypertrophy in the future liver remnant after hepatectomy in the H group (127.7 ± 24.7% of original volume) was greater than in the L group (115.9 ± 16.7%, p= 0.024). In a subgroup of patients with extended hepatectomy, hypertrophy was 130.9 ± 26.8% in the H group vs. 116.4 ± 16.5% in the L group (p= 0.037). Greater serum zinc at diagnosis was associated with greater hypertrophy in the future liver remnant.

Development of products based on ke-kame-tu formula for PMT at posyandu as an effort to prevent stunting

The "ke-kame-tu" formula is a mixture of Moringa leaf flour, red bean flour and tuna fish meal, with high protein, zinc, calcium, phosphorus and magnesium content. The specific aim of the research is to analyze the proximate content, amino acids, zinc, calcium, phosphorus and magnesium of supplementary feeding nugget products, and determine the most preferred supplementary feeding products. The “ke-kame-tu” formula (15-60-25) and supplementary feeding products were made using a randomized block design. Taste data was obtained using organoleptic tests. Analysis of calcium, phosphorus and magnesium using spectrophotometric methods. To determine the best supplementary feeding product, a diversity analysis (Anova) of organoleptic test results was carried out. The ke-kame-tu formula (15-60-35) contains 4.39 mg/100g of calcium, 530 mg/100 g of phosphorus, 80 mg/100 g of magnesium, 1.65 mg/100 g of zinc, and protein as much as 16.81%. In general, nuggets made using a modified recipe by adding to-kame-tu formulas with different concentrations have different nutritional content, namely increasing calcium, phosphorus, magnesium and protein content. Based on organoleptic tests, it was found that nugget products with N3 treatment were the preferred product compared to other treatments. This supplementary feeding product uses the addition of 100 grams of the second formula.