Sanitizing Jakarta: decolonizing planning and kampung imaginary

ABSTRACT

This article offers a critical view of the water and sanitation sector within the broader trajectory of Jakarta’s spatial development and planning. Its territorial focus is on kampungs and it traces their historical journey from the periphery of the colonial city – Batavia and its modern planning domain – to the centre of the post-independence planning regime. ‘Kampung’ is an indigenous term for rural-agricultural settlements. In the colonial period, it was used to label non-European and non-Chinese settlements in and around the city. Colonial modernity created certain stigmatizations: kampungs came to be seen as undisciplined and insanitary communities, sources of insurgency and threats to public health. But the kampung realm was also (re)produced through practices of segregation within the colonial planning system. The imaginaries of colonial modernity linger on within today’s planning practices, resulting in a persistent failure to improve the environmental health of kampungs and the city as a whole. Postcolonial kampungs remain as a cosmopolitan enclave open to different cultures and socio-political contestations. The article argues that, given the kampung’s resilience in varying socio-ecological conditions, urban kampungs should be seen not as a problem, but as an opportunity for new planning approaches.     

Quantification of Lipidomics Profiling using UPLC-QE-HESI- Lipid Analysis on the Salted Duck Egg Incorporated with Clove Extract

The salted egg yolks supplemented with clove extract are compared with the non-supplemented group, and subsequently the lipidomics profiles are characterized and identified by UPLC-QE-MS/MS in positive and negative ion modes respectively. A total of 315 lipids are detected in the control group and the clove extract treated group. In the positive ion mode, the 10 subclasses of glycerolipids in the treated samples are significantly different (p < 0.05). The lipid types with most varied compositions are triglyceride and ceramides, followed by CerG1 (glucosylceramide), LPE (lyso-phosphatidylethanolamine), diglyceride, and monosialodihexosyl ganglioside. In the negative ion mode, the authors identified 35 subclasses which are significantly different (p < 0.05), that include glycerolphospholipids, glycosphingolipids, and neutralglycosphingolipid. The lipid types with most varied compositions in negative mode are PE (phosphatidylethanolamine), followed by PC (phosphatidylcholine), LPC (lyso-phosphatidylcholine), and GM3 (monosialo-dihexosyl ganglioside). The contents of phosphatidylcholine, lyso-phosphatidylcholine, phosphatidylethanolamine, and monosialo-dihexosyl ganglioside in egg yolks treated with 0.5% (w/v) clove are significantly higher than those in the control group (p < 0.05), in which phosphatidylcholine and phosphatidylethanolamine are the main components of glycerolphospholipid. Practical Application : The lipidomics analyses of the salted egg yolk added with and without clove extract are compared to reveal the beneficial effect of clove extracts on the lipid profiles, and further exploring the types and relative content of the lipid components. A total of 315 lipids are detected in all samples. In the positive ion mode, the 10 subclasses of glycerolipids are found to be significantly different in the treated samples. In the negative ion mode, the lipid content of 35 subclasses are significantly different. From the nutrition fact value, salted duck egg enriched with clove extract can serve as one of the alternative egg products rich in essential lipids.     

CXCR4 and CXCR7 Inhibition Ameliorates the Formation of Platelet–Neutrophil Complexes and Neutrophil Extracellular Traps through Adora2b Signaling

Peritonitis and peritonitis-associated sepsis are characterized by an increased formation of platelet–neutrophil complexes (PNCs), which contribute to an excessive migration of polymorphonuclear neutrophils (PMN) into the inflamed tissue. An important neutrophilic mechanism to capture and kill invading pathogens is the formation of neutrophil extracellular traps (NETs). Formation of PNCs and NETs are essential to eliminate pathogens, but also lead to aggravated tissue damage. The chemokine receptors CXCR4 and CXCR7 on platelets and PMNs have been shown to play a pivotal role in inflammation. Thereby, CXCR4 and CXCR7 were linked with functional adenosine A2B receptor (Adora2b) signaling. We evaluated the effects of selective CXCR4 and CXCR7 inhibition on PNCs and NETs in zymosan- and fecal-induced sepsis. We determined the formation of PNCs in the blood and, in addition, their infiltration into various organs in wild-type and Adora2b−/− mice by flow cytometry and histological methods. Further, we evaluated NET formation in both mouse lines and the impact of Adora2b signaling on it. We hypothesized that the protective effects of CXCR4 and CXCR7 antagonism on PNC and NET formation are linked with Adora2b signaling. We observed an elevated CXCR4 and CXCR7 expression in circulating platelets and PMNs during acute inflammation. Specific CXCR4 and CXCR7 inhibition reduced PNC formation in the blood, respectively, in the peritoneal, lung, and liver tissue in wild-type mice, while no protective anti-inflammatory effects were observed in Adora2b−/− animals. In vitro, CXCR4 and CXCR7 antagonism dampened PNC and NET formation with human platelets and PMNs, confirming our in vivo data. In conclusion, our study reveals new protective aspects of the pharmacological modulation of CXCR4 and CXCR7 on PNC and NET formation during acute inflammation.     

Physical properties of supercritical fluid extrusion products composed of milk protein concentrate with carbohydrates

Supercritical fluid extrusion (SCFX) is a novel process combining traditional extrusion and supercritical fluid technologies. The objective of this study was (i) to assess the effect of sugar, maltodextrin and cornstarch on the physical properties of milk protein concentrate (MPC) puffed extrudates and (ii) to compare the physical and textural properties of SCFX puffed MPC products with commercially puffed cereal products. Results showed that the nutritious MPC puffed products with carbohydrates can be made with textural properties (hardness, brittleness and crispness) resembling those of the commercial samples. The porosity of F2 (0.573) was assessed to the commercial product C1 (0.543) and C2 (0.595), the specific length of F3 (50.41) was assessed to C1 (45.51) and F4 (80.14) was assessed to C2 (78.12). The hardness of extrudate F3 (435.49 KPa) was assessed to C2 (482.7 KPa). The Young's modulus of F5 (87.03) was assessed to C2 (80.57). The starches affected the crispness of the extrudates, and sugar affected the hardness and brittleness significantly.     

The effect of annealing on resistant starch content of different crop types: a systematic review and meta-analysis study

The growing demand for functional foods with a high resistant starch content (per cent RS) could be met by annealing starch modification. Through a meta-analysis, this study sought to shed light on the effect of annealing on the resistant starch content of various crop types. Twenty-one studies published between 2000 and 2020 were selected and eighty data points were extracted to be analysed using meta-essential tools. Hedge’s d Standardised Mean Difference (SMD) was designated for the effect size approach. Resistant starch content was influenced by the botanical origin of the carbohydrate source and the annealing parameters such as moisture content, incubation time and temperature. According to a meta-analysis of the data collected, the most significant increase in per cent RS is perceived on cereal (SMD: 7.58; 95% CI: 2.88–12.29; P = 0.001). Further analysis revealed that normal wheat had the highest significant per cent RS increase (SMD: 41.56; 95% CI: 19.52–63.61; P = 0.001). Annealing parameters resulted in significant %RS increase were moisture content of 80%, incubation time of 24 h and incubation temperature of 50–54 °C. These results were expected to provide data to optimise per cent RS increase through annealing efficiently.     

Forced unsteady state operation to improve H2 permeability through Pd-Ag membrane during start-up

Hydrogen separation from nitrogen containing gas mixture using Pd-Ag membrane shows a time lag and low hydrogen recovery during start-up period. In this study, forced unsteady state operation using a composition modulation of the feed gas was employed as a new operation method to increase the hydrogen recovery and to shorten the time lag. In this work, the performance of Pd75-Ag25 membrane during the separation of hydrogen from H₂/N₂ mixture under forced unsteady state operation at 623 K was investigated. During natural start-up without forced operation, the hydrogen recovery results in 35% and 14% for H₂/N₂ feed gas compositions of 70%/30% and 50%/50%, respectively, while the time lag in the natural operation results in 195 and 147 min for H₂/N₂ feed gas compositions of 70%/30% and 50%/50%, respectively. The experimental results show that forced unsteady state operation affects considerably on hydrogen recovery from H₂/N₂ mixture and the time lag during start-up. The maximum hydrogen recovery in the forced unsteady state operation is 60%, obtained at switching time 5 min and H₂/N₂ feed gas composition of 70%/30%, while for H₂/N₂ feed gas composition of 50%/50% the hydrogen recovery is not significantly influenced by switching time. The time lag indicates a profound decay trend monotonically by decreasing the switching time for both H₂/N₂ feed gas compositions.