Ji‐Qin Ni
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View article: A Study of the Collision Characteristics of Colloidal Particles in Fuel Servo Valves
A Study of the Collision Characteristics of Colloidal Particles in Fuel Servo Valves Open
The fuel electro-hydraulic servo valve is a core component of the aero-engine fuel control system, playing a crucial role in engine performance. Due to the operational characteristics of the aviation fuel supply and injection system, fuel …
View article: Optimizing Feedstocks Mixing Ratio and Hydraulic Retention Time for Biogas Production From Anaerobic Codigestion of Dairy Manure and Aquaculture Sludge
Optimizing Feedstocks Mixing Ratio and Hydraulic Retention Time for Biogas Production From Anaerobic Codigestion of Dairy Manure and Aquaculture Sludge Open
Aquaculture sludge (AS), rich in nutrients, can pose environmental risks such as eutrophication, threatening aquatic ecosystems and water quality if not properly managed. However, AS can also be used as a feedstock for bioenergy production…
View article: Evaluation of different strategies for swine house exhaust odor mitigation
Evaluation of different strategies for swine house exhaust odor mitigation Open
Air pollution and odor nuisance are critical challenges for the sustainable development of the swine industry. Several mitigation technologies have been studied to reduce odors from swine facilities. However, existing technologies continue…
View article: Particulate Matter (PM10) Concentrations and Emissions at a Commercial Laying Hen House with High-Quality and Long-Term Measurement
Particulate Matter (PM10) Concentrations and Emissions at a Commercial Laying Hen House with High-Quality and Long-Term Measurement Open
Particulate matter (PM) is a significant air pollutant in modern egg production. However, high-quality PM data from commercial egg farms are still very limited. A 6-month study, covering both cold and hot seasons, measured PM10 concentrati…
View article: Nanoparticles for improving biogas production and effluent biofertilizer
Nanoparticles for improving biogas production and effluent biofertilizer Open
The impact of nanoparticles (NP) mixtures (Fe + Ni + Co, Fe + Ni, Fe + Co, and Ni + Co) on the anaerobic digestion (AD) of cow manure was examined through kinetic modelling (Modified Gompertz, Logistic, and First-order kinetic) and experim…
View article: Sow and Piglet Behavior Characterization Using Visual Observation, Sensor Detection, and Video Recording
Sow and Piglet Behavior Characterization Using Visual Observation, Sensor Detection, and Video Recording Open
Animal behaviors are key signs of animals’ stress, disease, and overall well-being. This study was conducted in an experimental farrowing building using eighteen sow pens: nine exposed to natural heat stress under summer indoor temperature…
View article: Machine Learning Prediction of Foaming in Anaerobic Co-Digestion from Six Key Process Parameters
Machine Learning Prediction of Foaming in Anaerobic Co-Digestion from Six Key Process Parameters Open
Foaming in co-digested anaerobic digesters can reduce biogas production, leading to economic loss. However, the underlying causes of foaming are not completely understood. This study investigated a field-scale mesophilic digester system th…
View article: Measuring and Modeling Mechanical Ventilation for Long-Term Environmental Monitoring in Large Commercial Laying Hen House
Measuring and Modeling Mechanical Ventilation for Long-Term Environmental Monitoring in Large Commercial Laying Hen House Open
Determining ventilation rates in commercial animal buildings has been technically challenging. This study aimed to develop an innovative method and a ventilation model and provide new insights into animal building ventilation. A layer hous…
View article: A wearable real‐time particulate monitor demonstrates that soaking hay reduces dust exposure
A wearable real‐time particulate monitor demonstrates that soaking hay reduces dust exposure Open
Background Affordable particulate matter (PM) monitors suitable for use on horses will facilitate the evaluation of PM mitigation methods and improve the management of equine asthma. Objective Calibrate a real‐time wearable PM monitor (Bla…
View article: 96 Evaluating the impact of macroenvironment temperature on thermoregulatory and milk quality parameters in lactating sows and their litter
96 Evaluating the impact of macroenvironment temperature on thermoregulatory and milk quality parameters in lactating sows and their litter Open
Farrowing facility macroenvironment temperatures (TMacro) are often maintained at the upper end of the thermoneutral zone (24–25°C) of lactating sows, which may result in heat stress and reduced milk quality and quantity. Therefore, the st…
View article: A review of household and industrial anaerobic digestion in Asia: Biogas development and safety incidents
A review of household and industrial anaerobic digestion in Asia: Biogas development and safety incidents Open
Asia has the world's largest population and the largest number of biogas digesters, with implementation across 25 countries. These countries can be categorised into four groups based on their biogas development status. Asia has approximate…
View article: PSX-18 Determining the Optimal Macroenvironment Temperature to Improve Lactating Sow and Piglet Productivity
PSX-18 Determining the Optimal Macroenvironment Temperature to Improve Lactating Sow and Piglet Productivity Open
Pre-weaned piglets prefer higher temperatures than lactating sows. To address this, swine producers use heating lamps or pads in combination with maintaining farrowing room macroenvironment temperatures at the upper end of the thermoneutra…
View article: Characterizing and modeling hydrogen sulfide production in anaerobic digestion of livestock manure, agro‐industrial wastes, and wastewater sludge
Characterizing and modeling hydrogen sulfide production in anaerobic digestion of livestock manure, agro‐industrial wastes, and wastewater sludge Open
Hydrogen sulfide (H 2 S) is the most undesirable inorganic gas in biogas from anaerobic digestion (AD). However, H 2 S production in AD is complex and understanding of its processes is still limited. This study performed six controlled bat…
View article: Effect of acclimatization rate on biogas production from anaerobic digestion of biodiesel waste products
Effect of acclimatization rate on biogas production from anaerobic digestion of biodiesel waste products Open
Digester acclimatization can improve the efficiency of anaerobic digestion (AD), a potentially sustainable process for generating biogas from the biological decomposition of organic byproducts from biodiesel production. This study examined…
View article: Effectiveness and characteristics of a new technology to reduce ammonia, carbon dioxide, and particulate matter pollution in poultry production with artificial turf floor
Effectiveness and characteristics of a new technology to reduce ammonia, carbon dioxide, and particulate matter pollution in poultry production with artificial turf floor Open
Ammonia (NH3), carbon dioxide (CO2), and particulate matter (PM) are three major aerial pollutants that threaten the health of workers and animals in poultry production. An experiment was conducted in four laying hen rooms, with 735 to 740…
View article: Computational Fluid Dynamics Modeling of a Broiler House Microclimate in Summer and Winter
Computational Fluid Dynamics Modeling of a Broiler House Microclimate in Summer and Winter Open
Appropriate microclimate conditions in broiler housing are critical for optimizing poultry production and ensuring the health and welfare of the birds. In this study, spatial variabilities of the microclimate in summer and winter seasons i…
View article: The effect of reduced CP, synthetic amino acid supplemented diets on growth performance and nutrient excretion in wean to Finish swine
The effect of reduced CP, synthetic amino acid supplemented diets on growth performance and nutrient excretion in wean to Finish swine Open
Mixed sex pigs (n = 720) were placed in 12 rooms (Purdue Swine Environmental Research Building) to measure the effect of reduced crude protein (CP), amino acid (AA)-supplemented diets on growth and the carcass. Pigs were blocked by body we…
View article: Long-term performance of three mesophilic anaerobic digesters to convert animal and agro-industrial wastes into organic fertilizer
Long-term performance of three mesophilic anaerobic digesters to convert animal and agro-industrial wastes into organic fertilizer Open
View article: A critical review of advancement in scientific research on food animal welfare-related air pollution
A critical review of advancement in scientific research on food animal welfare-related air pollution Open
Air pollution generates hazardous pollutants that have resulted in safety, health, and other welfare issues of food animals. This paper reviewed scientific research advancement in food animal welfare-related air pollution based on 219 firs…
View article: Dynamic and 3-D spatial variations in manure characteristics in two commercial manure-belt laying hen houses
Dynamic and 3-D spatial variations in manure characteristics in two commercial manure-belt laying hen houses Open
View article: New insights into concentrations, sources and transformations of NH3, NOx, SO2 and PM at a commercial manure-belt layer house
New insights into concentrations, sources and transformations of NH3, NOx, SO2 and PM at a commercial manure-belt layer house Open
View article: Shanghai Parents’ Perception And Attitude Towards The Use Of Antibiotics On Children: A Cross-Sectional Study
Shanghai Parents’ Perception And Attitude Towards The Use Of Antibiotics On Children: A Cross-Sectional Study Open
Jian Wang,1,* Yuchao Sheng,2,3,* Jun Ni,4 Jianyu Zhu,5 Zhigang Zhou,5 Tianwei Liu,5 Xiaoying Zhang,6 Qi Zhao2,3 1Department of General Practice, Zhongshan Hospital, Fudan University, Shanghai, People’s Republic of China; 2Department of Epi…
View article: Potential Reductions in Greenhouse Gas and Fine Particulate Matter Emissions Using Corn Stover for Ethanol Production in China
Potential Reductions in Greenhouse Gas and Fine Particulate Matter Emissions Using Corn Stover for Ethanol Production in China Open
Corn stover is an abundant raw material that can be used to produce ethanol and reduce air pollution. This paper studied the potential reductions in greenhouse gas (GHG) and fine particulate matter (PM2.5) emissions across China if corn st…
View article: Effects of antibiotic-free pig rearing on ammonia emissions from five pairs of swine rooms in a wean-to-finish experiment
Effects of antibiotic-free pig rearing on ammonia emissions from five pairs of swine rooms in a wean-to-finish experiment Open
Antibiotic use and ammonia (NH3) emissions during animal production are two environmental issues of worldwide concern. However, the role of antibiotics on NH3 emissions is still unknown. This study evaluated the effec…
View article: Life Cycle Assessment of Large-scale Compressed Bio-natural Gas Production in China: A Case Study on Manure Co-digestion with Corn Stover
Life Cycle Assessment of Large-scale Compressed Bio-natural Gas Production in China: A Case Study on Manure Co-digestion with Corn Stover Open
Compressed bio-natural gas (CBG) production from large-scale systems has been recognized as promising because of the abundance of manure and crop residue feedstocks and its environmental friendliness. This study is a life cycle assessment …
View article: Design and test of a low-power acceleration sensor with Bluetooth Low Energy on ear tags for sow behaviour monitoring
Design and test of a low-power acceleration sensor with Bluetooth Low Energy on ear tags for sow behaviour monitoring Open
View article: Design And Validation Of An Adjustable Dynamic Vibration Absorber For Piping Vibration Suppression In Skid Mounted Compressor Unit
Design And Validation Of An Adjustable Dynamic Vibration Absorber For Piping Vibration Suppression In Skid Mounted Compressor Unit Open
The vibration control for a reciprocating compressor as well as piping has always been a challenge. Because of compact installation and limited space for the skid mounted compressor unit, it is difficult to arrange a piping support freely …
View article: Laboratory Evaluation of a Manure Additive for Mitigating Gas and Odor Releases from Layer Hen Manure
Laboratory Evaluation of a Manure Additive for Mitigating Gas and Odor Releases from Layer Hen Manure Open
Manure additives are widely used to mitigate gas and odor emissions from manure or improve manure properties. However, the reported effectiveness of some manure additive products has been mixed and most of the studies on poultry manure hav…
View article: Effect of cooling pad installation on indoor airflow distribution in a tunnel-ventilated laying-hen house
Effect of cooling pad installation on indoor airflow distribution in a tunnel-ventilated laying-hen house Open
Extra cooling pads on the sidewalls are needed for larger poultry houses using tunnel ventilation system. Preliminary study showed that the airflow velocity going through different aisles varies greatly when the extra pads are installed at…
View article: Modeling of Dynamic Ammonia Concentrations in Two Commercial Layer Hen Houses
Modeling of Dynamic Ammonia Concentrations in Two Commercial Layer Hen Houses Open
Ammonia (NH3) concentrations in confined layer hen houses are the highest among buildings of different animal species and are of great concern to indoor air quality and animal welfare. However, little has been done to investigate the dynam…