Pheasant Memorial Laboratory

小惑星リュウグウの研究で用いた地球化学的手法は人体に関係する研究にそっくりそのまま応用できます．宇宙を支配する摂理と同じ摂理がヒト内部の物質の挙動を決めるのです．われわれは惑星物質について，分け隔たりなく理解することを目指しています．[ ... 続きを読む ... Read More]

05/13/2023

PJA newsletter 15 号 (2023.3) にて座談会 [中村栄三・津田雄一さん・家正則さん・深尾良夫さん] の様子が紹介されました．

04/18/2023

Our Nurcan Kucukarslan got Ph.D. She wrote an essay about her study and life in our laboratory.

03/10/2023

Our Wei Zhang got Ph.D. He wrote an essay about his study and life in our laboratory.

03/01/2023

Online lecture about Ryugu with `ほとんど0円大学'

08/23/2022

We demonstrated us to public at Okayama.

08/18/2022

08/19/2021

We demonstrated us to public.

07/01/2022

Eizo gave a talk at From Earth to Space International Conference.

We have released a video of a talk event held at Space Science World "Hoshitori Prefecture".

10/22/2021

Space Science World Hoshitori Prefecture (Part2) --Ryugu sample observation experience--

07/07/2021

07/06/2021

Space Science World Hoshitori Prefecture (Part1) --Ryugu sample observation experience--

07/02/2021

On July 4, we will hold a talk event on the space Science World. - Stone of the asteroid "Ryugu" brought back by Hayabusa2 -

05/28/2021

Unravelling the chemical evolution of terrestrial planets in the early solar system: evidence from the isotopic composition of silicon and oxygen, which make up half of the Earth's mass

05/21/2021

New Multi-functional automated organic sample preparation system (MAOSPS) has been installed at PML!

05/14/2021

Msc. Hidehisa Tsuchida has joined CASTEM24Remote team as a Science + Techincs cordinator

05/07/2021

Dr. Elena Kalinina has been promoted to Science + Techincs cordinator to support new CASTEM24Remote

04/30/2021

Yunchao Shu, a new PostDoctoral Rearcher has joined us!

04/14/2021

Hao et al. has published a new study with important implications for magma fertility.

04/02/2021

Eizo Nakamura received the Governor's Award for Promotion of Tottori Prefecture.

04/01/2021

Eizo Nakamura is appointed as the director for CASTEM 24 Remote.

02/18/2021

Nguyen et al. published a new model of the evolution of arc volcanism.

01/21/2021

Van Kranendonk et al. Published a new treatise on the terrestrial origin of life.

12/25/2020

A new student from India has joined us!

12/18/2020

Application for Joint-Use Research 2021 First Call

12/11/2020

CASTEM 24 Remote: the next generation of CASTEM

12/04/2020

PML expands horizons with Prof. Javier Martin-Torres project HABIT

11/21/2020

New PANalytical AXIOS Advanced Spectrometer has arrived to PML!

11/13/2020

A new student from USA has joined us!

11/06/2020

PhD 2021 Spring enrollment is open!

10/30/2020

湯梨浜学園中学校が倉吉中央ロータリークラブ主催でPMLを訪問しました

10/23/2020

Application for Joint-Use Research 2020 Second Call (Extended!)

10/16/2020

Can the slab morphology control the volcanic evolution of arc system?

09/25/2020

Nurcan Küçükarslan has passed her mid-defense!

09/11/2020

Website Updates

08/28/2020

Discussing Science: Comment on: ‘A simple cryogenic method for efficient measurement of triple oxygen isotopes in silicates’ by Ghoshmaulik et al.

08/28/2020

Ancient and young recycled materials in the Hainan Plume.

08/21/2020

Post-doctoral fellow Dr. Yanqing Li has returned to China after finishing her research at PML.

08/07/2020

DREAM samples curation laboratory has new members!

07/31/2020

Application for Joint-Use Research 2020 Second Call

07/16/2020

Essay: We see the wood from a tree.

07/10/2020

Could clays have been a safe place for prebiotic compounds before life on Earth?

07/03/2020

Our latest article has been mentioned in the local media.

06/26/2020

PhD 2020 Autumn enrollment is open!

06/17/2020

We suggest that the rubble pile asteroid Ryugu formed through comet capture of debris and subsequent ice sublimation.

Ryugu may be the remnants of a comet, which lost its ice through sublimation as it transited into and out of the solar system. We will analyze Hayabusa2 samples to evaluate the predictions made about Ryugu in our laboratory.

「はやぶさ 2」のタッチダウン直後に小惑星表面から巻き上がった破片の色 (アルベド) が表裏で異なることに着目し (https://youtu.be/-3hO58HFa1M)，アルベドを説明する有機物存在量を求めました．

望遠鏡と探査機による分光観測から，リュウグウが数% の有機物を含む炭素質コンドライトに似た小惑星だと想定されるところ，われわれの解析の結果，有機物が総重量の六割を占めることが導かれました．

この想定をはるかに超える有機物存在量は，リュウグウがかつて彗星だったと考える ``三朝モデル'' で説明できます．彗星が太陽近傍を周回する間に氷を失い，有機物および岩石が濃集され，瓦礫状かつソロバン玉状の構造に至ったと考えられます．

三朝モデルは，「はやぶさ 2」が今年末に持ち帰る試料を解析することによって検証できます．「はやぶさ 2」プロジェクトにおいて JAXA ・宇宙科学研究所と連携協定を締結した岡山大学惑星物質研究所は，フェーズ 2 キュレーション施設として初期総合解析を担当します．

06/11/2020

Prof. Nakamura gave a talk in Advanced Analytical Technology Symposium 2019.

06/05/2020

New faculty member in PML!

01/28/2020

A brief report of the international workshop, "LifeSprings", was published.

12/20/2019

The international workshop, "LifeSprings", was held.

09/25/2019

Two of our PML students have passed their mid-term-defense examination!

07/12/2019

PML and its new publication in Nature communications appear in Nihonkai, Japanese newspaper.

07/09/2019

A collaboration between PML and Group of Atmospheric science (GAS) at Luleå University of Technology has been established.

05/07/2019

A new student form Sri Lanka has joined us!

04/11/2019

We suggest that a rubble pile asteroid (Itokawa, Ryugu, or Bennu) was turned from a comet.

On the 15th February (2013), a meteorite impacted Chelyabinsk state in Russia (see YouTube). It is referred to as the Chelyabinsk meteorite and was categorized as an ordinary chondrite. It has a genetic relationship to the asteroid Itokawa, which is also composed from fragments of ordinary chondrite.

We have applied our comprehensive analyses to the Chelyabinsk meteorite. ... Read More ... 続きを読む