https://petreelitterboxes.com/blogs/news/4-benefits-of-self-cleaning-litter-boxes
One of the best things about an automatic litter box is that it’s one less thing to worry about. Whether you are super-busy with work/school, away from home often or just hate daily scooping, a self-cleaning litter box can make your and your cat’s life tidier and nicer without extra effort. Let's introduce the top 4 Benefits of Self-Cleaning Litter Boxes now:
1. No more daily scooping: let’s face it, no matter how much we love our cats, we will never love scooping their clumped up urine and feces. A self-cleaning litter box scoops every time your cat leaves the box, minimizing waste management for you.
2. Less contact with cat waste: besides being nasty to deal with, cat waste can also be dangerous. As cat waste accumulates in the litter box, ammonia fumes are produced, which are toxic and can cause respiratory problems. Some bacterial and parasite infections/transfers are also very much possible, so the less direct contact with cat waste you have, the better.
3. Reduced odor in the house: by regularly scooping on its own, a self-cleaning litter box also reduces the odor emanating from cat waste. This is great news for the room in which the litter box is placed, your cat, yourself and even your guests.
4. A clean litter box for your cat all the time: with just a tiny bit of effort on your part (occasionally cleaning the unit), your kitty will have a clean and tidy litter box every time they need it. When their box isn’t clean, cats try to hold it in, which can lead to a various diseases of the urinary tract. A self cleaning litter box equals a healthy cat and a happy owner.
2020年6月15日星期一
https://petreelitterboxes.com/blogs/news/how-does-self-cleaning-litter-box-work
How Does Self Cleaning Litter Box Work?
Automatic Litter Boxes Are a Great Solution for the Busy Pet Owner, How Does Self Cleaning Litter Box Work?
Automatic self cleaning litter boxes rely on a power source to rake through your cat’s waste and dispose it into a waste bin based on a set time program.
You can set the timer to scoop between 5-20 minutes after your cat has left the box (depending on the model), which is quite convenient. Semi-automatic boxes scoop on their own terms, meaning setting the timer is not possible.
As for non-automatic or manual self-cleaning litter boxes, although they scoop on their own, you do need to roll or sift them in order to remove the waste from the bin.
Generally, automatic self cleaning cat litter boxes have a receptacle beneath or at one end of the box itself. A mechanical rake moves through the litter and sifts out your kitty’s waste products, depositing it into the receptacle. Odors are contained in the receptacle until you empty the receptacle by some sort of enclosure or top.
You can set the timer to scoop between 5-20 minutes after your cat has left the box (depending on the model), which is quite convenient. Semi-automatic boxes scoop on their own terms, meaning setting the timer is not possible.
As for non-automatic or manual self-cleaning litter boxes, although they scoop on their own, you do need to roll or sift them in order to remove the waste from the bin.
Generally, automatic self cleaning cat litter boxes have a receptacle beneath or at one end of the box itself. A mechanical rake moves through the litter and sifts out your kitty’s waste products, depositing it into the receptacle. Odors are contained in the receptacle until you empty the receptacle by some sort of enclosure or top.
One of the best things about an automatic self cleaning litter box is that it’s one less thing to worry about. Whether you are super-busy with work/school, away from home often or just hate daily scooping, a self-cleaning litter box can make your and your cat’s life tidier and nicer without extra effort.


2020年2月26日星期三
Protein Post-Translational Modification (PTM) plays a very important role in living organisms and is closely related to gene expression, signal transduction pathways, cell division and other processes. The modification of the same protein in different physiological states, different subcellular localization and different amino acid sites may correspond to different functions. Therefore, posttranslational modification of proteins is a hot and difficult problem.
Protein post-translational modification is a qualitative analysis of purified or complex protein samples. The common types of modification include phosphorylation, methylation, acetylation, biotinization, phosphorylation, glycosylation, ubiquitination, disulfide, etc.
1.Theory: Protein amino acid sequence of a specific location can covalently bind with chemical group or small molecular weight of protein so that to get protein post-translational modifications (PTMs). Compared to proteins that have not been modified, PTMs can lead to an increase in the molecular weight of specific sequences, and specific post-translational modifications can be detected by high-precision mass spectrometry detection. Mass spectra can distinguish the changes of molecular weight before and after modification of protein, so as long as the precise changes of molecular weight before and after modification of target protein can be known, any post-translation modification methods can be identified and quantified.
2. Technical feature:
1) High sensitivity, minimum protein concentration can be fmol level.
2) Protein that does not require special purification.
3) There is no risk of radioactivity compared to conventional methods.
4) Flux is high.
5) High accuracy.
Here are some common ways for protein post-translational modification:
Phosphorylation has the characteristics of simplicity, flexibility and reversibility, as well as the availability of donor ATP of phosphate groups. It is a common regulation method of eukaryotic cells.
The reversible process of phosphorylation and dephosphorylation of proteins, almost regulates all the process of life activity including cell proliferation, development, differentiation, regulation and control of the cytoskeleton, cell apoptosis, neural activity, muscle contraction, metabolism etc. And reversible protein phosphorylation is the most important signal transduction mode known. Many human diseases are known to be caused by abnormal phosphorylation, and some phosphorylation is caused by a disease.
N-acetylation is a highly conserved and reversible protein modification in vivo, which plays an important role in the activation of transcription regulatory factors in the nucleus. In addition, a large amount of non-histone acetylation is involved in the regulation of metabolic pathways and the activity of metabolic enzymes.
Because of the low content and wide dynamic range of acetylated modified proteins in biological samples, it is necessary to enrich the acetylated peptide fragments to improve their abundance before mass spectrometry analysis. Then, traditional quantitative proteome analysis method was used to quantitatively analyze the concentrated acetylated peptide sample.
Ubiquitination is an important posttranslational modification. The ubiquitin-proteasome system mediates 80%~85% protein degradation in eukaryotes. What’s more, ubiquitination can directly affect the activity and localization of proteins and regulate a variety of cellular activities including cell cycle, apoptosis, transcriptional regulation, DNA damage repair and immune response.
Ubiquitination is closely related to the incidence of diseases such as tumor and cardiovascular diseases. Therefore, as a major achievement of biochemical research in recent years, it has become a new target for research and development of new drugs.
Glycosylation is a process of adding saccharides to proteins or lipids under the control of enzymes, occurring in areas such as endoplasmic reticulum and Golgi bodies. Under the action of glycosyltransferase, the saccharides are transferred to the protein and covalently binds to the amino acid residues on the protein. Proteins undergo glycosylation to form glycoproteins. Glycosylation is an important modification of proteins, and has the function of regulating proteins. Glycosylation not only affects the spatial conformation, biological activity, transport and localization of proteins, but also plays an important role in molecular recognition, cell communication, signal transduction and other specific biological processes.
It can be said that from medical health to agricultural production, protein is closely related to people's life. However, there are still many aspects of post-translational modification that are not yet understood and many that have not yet been discovered. This makes the research on post-translational modification of proteins a hot spot in the field of life science.
2020年1月16日星期四
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