Plant Definition and 284 Threads

There are reports of a series of problems at the Rostov Nuclear Power Plant. Shutdowns, regional power outages, radiation releases, and runs on iodine. Is 1.5 million curies a lot to release?

There is evidence of forests that existed in Antartica in the past. This is from fossilized plant matter that has been found as far back as Scotts expedition. It has probably also been found near the north pole. This suggests that in the past there was less ice on the globe than now. Perhaps and...

Where could you find a systematic review of terms specifying the possible sex structures of plant populations? This https://en.wikipedia.org/wiki/Plant_reproductive_morphology has a list of 30 terms, arranged by alphabet not meaning, containing many synonyms... It seems to me that a plant...

I spent the past several weeks making this 3D model of a nuclear power plant control room.

Got interested on how plants (and other things such as fungi) could evolve on other planets along with how plant life may flourish depending on the position of the planet to the sun, moon etc. I'm looking for any article talking about this or something similar.

Panasonic is going to build an electric car battery factory plant in DeSoto, KS. Will hire 4000 jobs at the plant and another 4000 jobs throughout the state. IIRC, the factory will cost 4 billion dollars to build. edit: corrected spelling of DeSoto

Public Safety Announcement. Earlier today, I read two articles on giant hogweed. In one case, a dog ran into some brush along a trail and apparently came in contact with the plant. His injury was so severe that he was euthanized. In another case, a child came in contact with the plant and...

Common directions for putting plants into pots says the pots must have drain holes so that the roots of the plants don't "drown". How is this problem avoided in the "self watering" type of pot where there is a reservoir of water at the bottom of the pot and and a cylinder filled with soil that...

Is this the right path in solving this problem? Am i finding the correct enthalpies? I am also having difficulty understanding so what I've understood is that in a rankine cycle P2=P3 but here P2 is given and P3 has a given variable which is T=25 C too so should I neglect P2=P3? Heres my...

Got some good resources on Chemical plant design and construction. A Chemical plant design and construction. B Chemical plant design and construction.

Let's keep this non-political, similar to the Fukushima thread. Thanks! https://finance.yahoo.com/news/1-ukraine-nuclear-power-plant-001225198.html

The western false asphodel (Triantha occidentalis) has been shown to be carnivorous, but only on the stem of it's flower (so only in flowering season). Insects get stuck on sticky little threads on the flower stem and then get digested there (kind of like a sundew plants does). News article...

I have a small yard (25 feet wide) and the southernmost part of it is almost always shaded by a school that is adjacent. The previous owners had 5 paper birch trees plants in the shaded portion, three across the back edge then two planted about 10 feet closer to my house on the left and right...

Heat cannot be removed by liquid-to-gas heat exchangers since there is no substantial atmospheres on the Moon or on Mars. It cannot be dissipated by venting steam since there is a critical water shortage. It cannot be dissipated by rocks or soil since both are essentially thermal insulators. It...

Summary:: Design compressed air energy storage for PV plant [Mentor Note -- Thread moved from a technical forum, so no Homework Template is shown] Hi All For a PV project of 5 kW, we will use a CAES. The preliminary design will consist of a compressor - 2 heat exchanger - Air receiver - air...

Do plants always have just one apical meristem at any given time? If I see multiple buds at a single shoot tip (multiple "apical buds"?), what am I looking at? Is it: multiple ("codominant") apical meristems, or the buds compete for dominance until one of them ends up being the apical meristem...

Would love some insight: We're always taught that you can tell a leaf by the axillary bud where the petiole connects to the stem. But what if the axillary bud has developed into a stem/branch? Would it be correct to say that leaves often lack axillary buds at their junction with the stem (maybe...

I have a question for anyone on here that has pursued the nuclear energy field. I'm interested in becoming an equipment technician or operator at a nuclear power plant, but I am already 26 years old. I understand that many of the operators and technicians were former Navy nukes. I looked into...

This is the first part of the problem, which I solved. Now to the second part which I can't manage to find the equations I need to use. Problem: This plant is connected to a 20/0.4 kV transformer of 250 kVA power, through an XP00-A cable (4x150 mm2, IN=300 A, Z1=0.26 Ω/km). a) Calculate...

2. Betty would like your help planning her garden whose rows are all of equal length. She would like to grow carrots, beans, sunflowers, tomatoes and peppers. She tells you she would like to devote twice as many rows to growing peppers as she does to beans. She only has enough tomato plants to...

I am trying to build a miniature (it should fit on a desk) binary geothermal power plant for educational purposes. I obviously do not expect to drill into the ground with this power plant, but I hope to be able to demonstrate new design principles with it. I have many questions as to how to do...

Exelon the current owner of Three Mile Island Power Plant will shut it down in about two weeks. This is 15 year short of its current license expiration date. The reason supposedly is the cost of operation since methane is currently so cheap. Exelon tried to persuade the Pennsylvania...

Hello, I'm Andrew and I'm in 12th grade. If you are interested, I would like to share a presentation showing the process, observations, results of an experiment showing the physical effects copper sulfate can have on early plant development. I, with much help from some intelligent members of...

Hi, I'm in 12th grade and for my senior project I am doing an observation on the effects copper would have on plant growth. I have used copper sulfate to create increasing concentrations of copper in which I used to water my test plants. After further research of lately, I found that copper...

My inital assumption was to just take T1 = 5600 and T2= 300K, find the maximum efficiency and then divide it by two and three but I don't believe this question to be that simple. I'm confused as to where the 750K fits in as I thought no matter what occurred in between the heat reservoir and heat...

I have a question which is ungoogleable. Question: What is the most efficient way to fully dissolve plant matter without destroying its chemical make up, for distillation purposes? Background Information: I started down this rabbit hole while researching the viability of a artisanal soap...

Hi, I'm in 12th grade and for my senior project I wanted to do an experiment on the effects that copper and zinc have on mung beans. I have copper sulfate pentahyde and zinc sulfate monohydrate, which I had purchased because I have seen information on other similar experiments where these were...

Hello! I have some plans that i want to share and get some feedback on before i start construction and buying parts. I have some land next to a lake that i can build a dam with head of 30m around 10000m2 and almost 50000m3. I am thinking of solar panels and wind turbine to generate electricity...

Hello all, first post. I'm interested in granular load factor statistics for the Palo Verde plant, and LF reporting practices in general. Reviewing the LF stats for PV in the PRIS DB, I'm a bit confused. The annual LF in 2002 was 102. PRIS indicates that 102 is a percentage. What I would...

Hello What are benefits of nuclear power plant electricity than hydro power generated electricity Does it cost less per unit any or the waveform is pure sine wave how engineer build it .

Homework Statement A researcher studied six independently assorting genes in a plant. Each gene has a dominant and a recessive allele: R black stem, r red stem; D tall plant, d dwarf plant; C full pods, c constricted pods; O round fruit, o oval fruit; H hairless leaves, h hairy leaves; W purple...

I have looked over the types of generators used in most power plants (Hydro, Nuclear, coal etc) and with different sized and rotor rpm's they all basically share the same principle of operation if I'm not mistaken, which is that the rotor gets supplied via brushes and slip rings with a DC...

Science magazine news article here.

Hello everybody! Areva is supposed to build a plant in China to reprocess spent nuclear fuel (agreement hoped in Spring 2018). I should like to remind that the radioactive 85Kr fission product, which stays in the fuel rods until they're opened, can be stored easily until it has decayed, as I...

Good morning at all, I have to do one research of the transport of large nuclear reactors, and I need to have an idea of which is the DIAMETER, HEIGHT and WEIGHT of the reactor I think that there are a lot of different dimension, but i want to know only approximately, because i don't have...

Midland Nuclear Power Plant was going to have two nuclear reactors from Babcock & Wilcox. Unit 1 was to have a capacity of 460 MWe, while Unit 2 was to have a capacity of 808 MWe. Were the reactors twins that simply had different steam machinery due to the cogeneration requirements or were they...

We have some type of squash plant growing in a small garden. It remarkable how much it has spread. I would think it advantageous for such a plant to form additional root systems, try as I might I do not see them on this plant. Is that typical of squash and pumpkin type plants, no additional root...

Steam Power Plant Questions

My hope is to explore [the existence of] dynamic correlation of plant tissue (leaves to start with) electrical resistance to stimuli. I've heretofore conducted experimentation reasonably sure enough of the techniques and materials I'll need that I've never posted for such advice in a public...

It seems that the batteries installed at nuclear power plants would have been one of the largest scale applications of battery technology prior to the development of battery storage stations for utilities. I'm wondering what kind of technology they use(d) and what kind of lifespan, capacity, and...

So I need some help verifying this information.(I had to dumb it down, for the younger ones) - The Nuclear Fission process is started when the Nuclear fuels rods are submerged in coolant water to moderate the Nuclear fission process. When the Fuel rods are put close together this sets of a...

I'm trying to simulate plant evolution to see if there's a genetic reason why fronds are so common in nature, and one problem I've come across is branch physics. Whenever a segment of a leaf or branch bends, not only does it affect the angle of all child segments (and thus how they'll bend), it...

I am trying to understand the fixed cost of a nuclear power plant relative to variable cost. By fixed cost I mean "cost that does not vary with the amount of the power outputted over a given time period." By variable cost I mean "cost items that vary with the amount of the power outputted...

Homework Statement Homework Equations Heat added, Qa (This I'm not sure how since the steam passed through a reheater before it enters the HPT. That is what I understand based on the problem above) Work Net, Wnet Efficiency, Wnet/Qa Heat Rate, WP/EP (Not sure if that is the correct formula)...

Hi. I fear I might not have understood some fundamental concepts about electric power transmission. So we have "neutral" which is brought to Earth potential. Does this mean the electrical circuit from the power plant over highly conductive aluminium cables to my home closes back to the power...

I'm wondering if anyone knows where I could find information on historical costs and efficiencies of various sources of energy (hydroelectricity, coal, petroleum, natural gas, etc.) and plant types (steam, diesel, and gas turbine), especially at facilities of various sizes. That information...

Homework Statement A steam turbine in a small electric power plant is designed to accept 4500 kg of steam at 60 bar and 500oC and exhaust the stem at 10 bar. Part C. In off-peak hours, the power output of the turbine in part a) (100% efficient) is decreased by adjusting a throttling valve...

Few months back, in the final rounds of biology olympiad for Highschool students, i was asked, "Plants distributes sugar in the phloem as sucrose molecules, why did plant do this, and is there any advantages? Why not other form of sugar like glucose?"Can anyone help me? :3 Also i was wondering...

Homework Statement A power plant burns coal and generates an average of 700.0 Megawatts (MW) of electrical power while discharging 1162.00 MW as waste heat. Find the total electrical energy generated by the plant in a 30-day period. Homework Equations W = J/sec The Attempt at a Solution...

This is probably a very basic engineering question, but I'm from an energy policy background and the resources I've found (such as this) are quite detailed. Internal combustion engines such as automobile engines and aircraft (jet and piston powered) produce more power in colder environments and...